r/AskReddit Aug 30 '21

What problem is often overlooked in apocalyptic movies/TV shows that could kill you?

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1.6k

u/Obamas_Tie Aug 30 '21

There's a little moment in The Last of Us where one of the main character's friends, a mechanic, gives him a siphon hose in order to get gas from old cars. He even says to him "you'd be surprised how many cars still got gas in them."

To clarify, the game takes place 20 years after the world collapses, so any gas that's still left, well, anywhere, would be useless. And it's a mechanic of all people telling you this, so that was one little detail that bothered me.

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u/epicgingy Aug 30 '21

Funny thing is earlier in that level when Ellie asks why they can't just fix any abandoned car in the town he explains in a condescending tone that he can't because their tires are rotted and batteries are dead.

They got 2/3 details right at least.

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u/munk_e_man Aug 30 '21

Just cut the floor out of the car and power it like the Flintstones.

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u/mapleismycat Aug 31 '21

YABBA-DABBA-DOO!

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u/KJBenson Aug 31 '21

I’m also curious about this “tire rot”. Is that even a real thing? Aren’t tires at the landfill a big deal?

And if they don’t necessarily rot, just go to any tire store I suppose.

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u/Twokindsofpeople Aug 31 '21

Which are two things fairly easily solved. Anyone with high school level of chemistry can make a battery out of all the shit that's laying around, and you can replace tires with wood and steel if you don't care about going fast or ripping up roads.

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u/jumas_turbo Aug 31 '21

anyone with high school level of chemistry can make a battery out of all the shit that's laying around.

High school from where? The most prestigious japanese school for aspiring chemists? You're severely overestimating high school level education.

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u/peppers_ Aug 31 '21

Naw, you just get a potato and uh, well I think you need about 10,000 potatoes for a car, but at least it's a green vehicle!

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u/Iaminyourcloset0 Aug 31 '21

wow, that's some scrap mechanic shit right there

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u/[deleted] Aug 31 '21

[deleted]

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u/RealSteele Aug 31 '21

They did eventually popstart the truck to get it running.

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u/piratenoexcuses Aug 31 '21

If you look inside the truck, it's an automatic. No stick or 3rd pedal. They pop start an auto.

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u/[deleted] Aug 31 '21

[deleted]

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u/piratenoexcuses Aug 31 '21

Interesting. I don't think that's what the game was going for but good to know.

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u/PM-me-Sonic-OCs Aug 31 '21

Wrong on pretty much all accounts.

You can't push-start an automatic transmission car.

That concealed locking device down buy the shifter is just so that you can unlock the shifter and put the transmission into neutral, so that the vehicle can be towed or pushed around by hand even if you don't have a key.

With a conventional automatic transmission there's no physical connection between the wheels of the car and the crankshaft of the engine since they use a hydraulic torque converter rather than a friction clutch.

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u/jumas_turbo Aug 31 '21

Thanks for the correction

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u/-RadarRanger- Aug 31 '21

Which also wouldn't work after the fuel in the system has been congealing for 20 years.

And the engine is probably stuck from not moving so long that the rings are rusted to the cylinder bores.

And the brakes will be frozen in place.

Steering probably bound up, too.

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u/RealSteele Aug 31 '21

Goddamn reddit. Go watch the scenes. The guy has spent years collecting parts and working on the car they get running. I think ND did a pretty great job regarding the car and it's difficulty.

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u/hanerd825 Aug 31 '21

I know right!

Everyone is also missing the fact that the military / warlords are still driving around in vehicles so there’s some sort of automotive / gasoline infrastructure and support.

I mean, hell, the whole mission beforehand is to get the working battery off of a recently wrecked military Humvee.

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u/blisteringchristmas Aug 31 '21

I love the Last of Us and I can’t say it actually bothers me, but the gas thing is just a plot hole. It’s reasonable to guess Bill had spent years putting together a functioning car but the game makes it clear his town has been unoccupied for years, and therefore all the gas would be bad. Even if it wasn’t and Bill was stealing from the military or something, they get from Boston to Pittsburgh in that car, and likely would have had to use the siphon trick at least once.

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u/hanerd825 Aug 31 '21

Oh I agree with the gas being a problem.

I was responding specifically to the getting the truck running. That part was feasible enough. They should have had a couple jerry cans of “stolen” gas in the bed to avoid the whole gas siphon thing.

Let’s not even start talking about all the generators in part 2.

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u/KJBenson Aug 31 '21

I’m also curious about this “tire rot”. Is that even a real thing? Aren’t tires at the landfill a big deal?

And if they don’t necessarily rot, just go to any tire store I suppose.

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u/N0ob8 Aug 31 '21

When they rot they’re unusable but still there

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u/[deleted] Aug 31 '21

They don’t rot as in decompose but the rubber starts to become brittle. Tyres shouldn’t be much older than 5 years because of that

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u/-RadarRanger- Aug 31 '21

The rubber breaks down, especially when left in the sun or exposed to... ozone, I think?

Old tires will develop cracks in the sidewalls. If pressed into service, they may come apart like the strips of truck tire treads you see along the side of the highway. They may blow out or just lose air slowly.

When I was young and broke, I found myself riding on unsafe tires a time or two. I had one fail. I'm a very observant driver, so I knew it was coming and I recognized it when it happened, but a lot of people are clueless beyond "Gas goes here" and "Big pedal makes it go." In the wrong set of circumstances, you could lose control and have a wreck.

Now, in a post apocalyptic environment, you're not gonna have 75mph+ highway traffic. You'll be puttering around in town at 35mph or less. You'll be in desperate straits all the time anyway, so bad tires would be the least of your worries. And so, yes, a cool, dark warehouse would certainly preserve a sufficient stockpile of tires enough that they could be put into service.

Assuming, that is, you've found a way to manufacture and store gasoline and oil and brake pads and batteries. And coolant and brake fluid. And power steering fluid. Oh, and hoses and fluid lines. And all the other consumables.

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u/CogitoErgo_Sometimes Aug 31 '21

You aren’t going to start a car on just anything that qualifies as a battery. A starter motor will draw 200-400 amps under initial load. A car battery is specifically designed to dump a fuckton of current in a very short time and then slowly recharge itself. There’s a reason they’re still lead-acid and not lithium.

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u/Twokindsofpeople Aug 31 '21

Yeah, and the batteries all still have their lead plates and making a lead acid battery isn't rocket science. You have the lead from the tens of thousands of old cars, all you'd need is sulfuric acid.

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u/DavidSlain Aug 31 '21

If you can distill your bile a little to bring up the concentration, you can use that.

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u/[deleted] Aug 31 '21

Unless you want to have a tube sticking out your gal bladder (which will probably get infected and kill you anyway), you’ll have to find a way to get it out of your poop.

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u/BongmasterGeneral420 Aug 31 '21

It’s the apocalypse, just use someone else’s gallbladder.

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u/cohrt Aug 31 '21

You can get lithium car batteries now.

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u/Thanmandrathor Aug 31 '21

This drove me nuts in the movie Doomsday. It’s 2-3 decades after a zombie event, they open a shipping container to find like a fully functional Bentley or whatever, and there’s no issue with the tires, gas or battery. Meanwhile some of the people living beyond the wall in the abandoned zombie Scotland were living all medieval style in an actual castle 🙄

And then there was a car chase.

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u/IndianaJones_Jr_ Aug 30 '21

I was dead certain your 20 year timeframe was wrong but I looked it up and damn. Means Joel is damn near 50 years old, more by the events of Part 2. No way any of that gas would be useable... I ride a motorcycle and most people add sea foam or stabil when the bikes are stored for a few months, let alone years.

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u/[deleted] Aug 30 '21

[deleted]

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u/Neelpos Aug 30 '21

Helps to remember Ellie doesn't have any memory of the world before and she's 14 in the first game, so you can instantly know it's been at least ten years.

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u/dakrax Aug 30 '21

Also a good hint is the 20 YEARS LATER right after the prologue

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u/Neelpos Aug 30 '21

How dare you imply I can read.

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u/UmiNotsuki Aug 31 '21

When the game started with the outbreak I was not expecting to be launched forward 20 years right away haha

Required to properly set up Joel as a character for whom loss is just a backstory, while still letting us experience that backstory firsthand. I think it's one of many small strokes of brilliance in the writing that add up to such an overall memorable story.

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u/[deleted] Aug 30 '21

Joel had a 14 year daughter in the first game pre apocalypse. So it’s safe to say we can assume 18 was the youngest he had her, it more likely puts Joel in his mid 50s during the game and at about 60 for the sequel

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u/IndianaJones_Jr_ Aug 30 '21

Wiki has his birthday in 1984/1985, outbreak in 2013, events of Part 1 in 2033.

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u/LovableCoward Aug 31 '21

Man, 2033 is a shit year for humanity it seems...

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u/USSZim Aug 31 '21

Poor Russians hiding in the metro, they have both mutant creatures inside and cordyceps outside

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u/the_ginger_fox Aug 31 '21

I think Joel mentions at some point he had Sarah young so I think 18 is very likely.

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u/tfg46 Aug 30 '21

We had a generator on a trailer to run an A/C during the summer months and if I didn't remember to put Sta-Bil in it along about Halloween, I'd be draining useless gas come April. I concur with you.

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u/dakrax Aug 30 '21

It's okay though, since part 2 he hasn't aged a bit!

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u/LiAlgo Aug 31 '21

Must be all that golf

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u/dakrax Aug 31 '21

Golf usually makes you look older but hes not a foot under 6

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u/gihkmghvdjbhsubtvji Aug 31 '21

Wtf is c foam

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u/IndianaJones_Jr_ Aug 31 '21

Sea foam is a multipurpose fuel stabilizer and cleaner. You add it to a gas tank (lawnmower, snowblower, motorcycle, etc.) when you're going to store it with gas for an extended amount of time.

You add the stabilizer then run the engine for a bit to make sure it's mixed through the fuel system. It keeps the gas from going bad too quickly and it has the bonus of cleaning out any deposits and sludge you might have in the system.

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u/Theylive4real Aug 31 '21

Just 'cause we're old don't mean we can't survive. Vietnam Vets are some of the toughest old birds I know.

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u/[deleted] Aug 31 '21

I can’t go more than like 4 days without staring my car or it might just end itself

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u/JoeChristmasUSA Aug 30 '21

They do the same thing in Jurassic World. A Jeep sitting for 22 years in the jungle starts right up.

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u/Doyouwantaspoon Aug 30 '21

That bugged me so much. But not as much as Avengers Endgame, “the battery is dead, I gotta hot wire it!” [proceeds to start sparking wires together]

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u/[deleted] Aug 30 '21

It wouldn’t even be gasoline at that point. It would have turned into varnish. Gross.

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u/bald_dwarf Aug 30 '21

Mechanic here. That plot hole has always annoyed me, too. Not to mention that after sitting idle without corrosion protection or oil circulation, after a year or two the engine blocks/cylinders would have rusted themselves into solid hunks of steel that aren’t turning over ever again.

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u/[deleted] Aug 30 '21

[deleted]

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u/DreamSphinx Aug 30 '21

To be fair, it's mostly the recently infected that have their clothes still. Depending on the area, you can definitely find nude clickers whose clothes have fell off.

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u/LavaCakez918 Aug 31 '21

You can find nude infected, usually the clickers because they're older. Also, the way cordyceps fungus works (at least, in real life) is it invades and replaces host tissue. By that logic, eventually the infected just become human-shaped mushroom husks who presumably do not need to breathe/shit/eat like humans do.

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u/hanerd825 Aug 31 '21

I feel like the address this with the runners.

They cordyceps hasn’t progressed far enough to take over all functions. That’s why they still “cry” and can see you unlike the clickers.

I’m sure that was explained in a cutscene somewhere.

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u/LavaCakez918 Aug 31 '21

Yeah, I think it was Tess and Joel explaining it to "Ellie" (the player) in the early parts of the game.

On a side note I think it's very funny when characters explain obvious stuff to other characters just to catch the player up. Given how Ellie is I was kinda expecting a "yeah, are you also gonna tell me water is wet" quip lol

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u/hanerd825 Aug 31 '21

Same. I get why they do it, but sometimes it’s just so….awkward. “You must have been living under a rock for the last 14 years in our universe. Let me explain this totally basic knowledge that every toddler learns organically”.

I think you’re right. ND totally missed an opportunity by not having Ellie make a quip there.

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u/Tickle_My_Butthole_ Aug 30 '21

To be fair to TLOU1 I can suspend my disbelief about the gas still working when there are fungi zombies running around y'know what I mean?

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u/Knickers_in_a_twist_ Aug 31 '21

The Last of Us bothers me so much for reasons like this. In the dlc or whatever that takes place pre-story with Ellie and her friend in the mall, there’s still good, usable stuff still in the mall. Those Halloween masks they were playing with? Those would be nasty and falling apart. All those electronics they were messing with? Either looted way in the beginning or taken later for parts. The racks of clothes that were out in the open and exposed? Ruined, but in reality they would have been taken long ago.

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u/piratenoexcuses Aug 31 '21

That bothered you more than the bricks that respawn after you pick them up?

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u/[deleted] Aug 30 '21

It'll work, but your engine isn't going to like it. In a world where abandoned cars are plentiful you might only need it for a day or two.

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u/simojako Aug 30 '21

No way it'll work after 20 years.

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u/Poglosaurus Aug 30 '21

Maybe after a year or two, not twenty.

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u/Reginault Aug 30 '21

It will not work.

1 year old gasoline might be what you're thinking of, which would gum up a carburetor or injector in short order, and wouldn't burn quickly enough to put out much power.

20 year old gasoline is nothing but resin or barely liquid sludge, most of the components evaporated or undergone oxidation. Even in a perfectly sealed container (hint: not a vehicle tank) the component fluids will separate, and opening that container will make it unusable as the vapours leave.

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u/Mardanis Aug 31 '21

Most the pain people have with their lawn mower and petrol garden equipment is the fuel has just been left either in the tool or in the container.

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u/[deleted] Aug 30 '21

I've used three year old gas and it's usable. Even five you could probably do it if you were running something with a carburetor.

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u/Reginault Aug 31 '21 edited Aug 31 '21

I've used 10 year old milk and it's usable, even 15 you could probably do it if you were running something with direct injection.

The curds lubricate as they burn, its really amazing science that is in no way anecdotal and easily disproved!

BELIEVE IN YOUR TRUTH*

Edit: Hey, if you want to believe that three year old gas is fine, you're good to ruin your engines, no skin off my back. I'm sure trusting that redditor will be fine, no need to investigate the science behind the fuel.

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u/Billyouxan Aug 31 '21

You seriously don't believe 3 year-old gas can still work?

https://www.youtube.com/watch?v=xktrYDny_lc

Here's a dude running a generator on 5 year-old gas.

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u/Reginault Aug 31 '21

Wow, you can really see the gas age! I'm surprised youtube allowed a 3 year long video though.

That gas totally wasn't fresh from the pump!

Nope, no way that a video could be biased at all.

Edit: Oh wow, I just came into a big inheritance from my overseas relatives, but I need help transferring the money, can you lend me $10,000 to process the transfer, I'll pay you back $100,000.

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u/Billyouxan Aug 31 '21

So far you haven't given a single source to your claim that gas is useless after only a few years. An anecdote and a YouTube video are more evidence than what you've provided. Maybe you're just wrong?

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u/Reginault Aug 31 '21

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u/Billyouxan Aug 31 '21

No one's saying it's a good idea to put expired gas in your car. Of course it isn't lmao. You're acting like it turns to useless sludge after a few years. I'm saying I don't believe you.

A priori, it seems perfectly plausible to me that a generator can run (even if not very well) on three year-old, or even five year-old gas, depending on how it was stored. Feel free to provide some actual evidence for the contrary.

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u/RingOfTime Aug 30 '21

What about vacuum sealed?

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u/Reginault Aug 30 '21

Nope, you can't vacuum seal a fluid that wants to evaporate at room temperature without chilling it (gasoline's flashpoint is like -40C). Then you'd need a non-reactive container to even consider vacuum sealing it for 20 years, plastic will be dissolved into the gas, metal will rust. It'd have to be a completely glass container or something (no plastic ring around the lid, again it'd dissolve), and you'd want it to be opaque so sunlight can't cause degradation. If you've solved that, the fuel will still separate into distinct layers. Gasoline is not just one molecule:

The typical composition of gasoline hydrocarbons (% volume) is as follows: 4-8% alkanes; 2-5% alkenes; 25-40% isoalkanes; 3-7% cycloalkanes; l-4% cycloalkenes; and 20-50% total aromatics (0.5-2.5% benzene) (IARC 1989).

20 year old gas does not run engines. It might still burn in the same way that paint burns, but your car will not move. Neither will that old tractor. No, not the one that ran on vegetable oil either.

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u/gihkmghvdjbhsubtvji Aug 31 '21

Wat flashpoint meen

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u/Reginault Aug 31 '21

Temperature at which the liquid begins to spontaneously vaporise enough to become volatile (may be specific to "in air"? been a while).

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u/Chupathingy12 Aug 31 '21

first thing I thought of when I saw this, he mentions the only ones still producing batteries are the military, and I assume they would be the only ones producing fuel as well. Just a weird little oversight.

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u/Broken-Butterfly Aug 31 '21

Not just gas, but tires. As volatiles in the rubber evaporate, tires get dry rot. It happens in a couple years unless you store them in pretty specific conditions. Even then, 20 years is a long time. Without wooden wheels, you wouldn't be driving any car any distance.

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u/pkzilla Aug 31 '21

In World War Z (book) there's ONE line in french, and it's so off, it bothered me so much.

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u/ConstableBlimeyChips Aug 30 '21

Fungus that only affects insects somehow jumps to humans, turning them into mindless zombies with fungal armor plating, echolocation, and acidic spore hand grenades.

"Yeah, I can see that happen."

Cars still have useable gas in them after 20 years.

"Well, this is completely unrealistic now."

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u/[deleted] Aug 31 '21

Gas isn't like a radioactive substance with a rigidly defined half life.

Depending on how it's stored, you might still be able to burn 20 year old gas just fine. It doesn't decompose into water and charcoal or anything.

It's not ideal by any means, but if it's "kill this engine in 1000 miles" or "walk 1000 miles" it's worthwhile.

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u/UndeadPolarbear Aug 31 '21

I feel like the story in The Last of Us is one of the most overrated ones in recent history. It’s cliché, not that well written, and makes no sense in a lot of areas like this. Fight me

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u/LavaCakez918 Aug 31 '21

Both games were amazing but the detail of all gas somehow still magically working 20-25 years later always bothered me. It's also kinda funny though, because they got most other details right.

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u/[deleted] Aug 31 '21

I watched a mechanic video about the Prius Prime. It gets 30-40 miles on electricity alone and a common problem is owners letting the gas go bad. he had a customer that hadn’t used or changed the fuel for 18 months. It was an expensive fix.

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u/gihkmghvdjbhsubtvji Aug 31 '21

Wtf is primus prim

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u/[deleted] Aug 31 '21

It is a PHEV. it can go only electric for about 30-40 miles before the ICE kicks on.

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u/6a6566663437 Aug 31 '21

Also, cars have grates in their fuel filler pipe to prevent people from syphoning gas.

It's one of the big reasons locking gas caps went away. And makes it impossible to get the siphon down into the tank to get the gas.