this post was submitted on 16 Sep 2026
74 points (98.7% liked)

Ask Lemmy

41443 readers
937 users here now

A Fediverse community for open-ended, thought provoking questions


Rules: (interactive)


1) Be nice and; have funDoxxing, trolling, sealioning, racism, toxicity and dog-whistling are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them


2) All posts must end with a '?'This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?


3) No spamPlease do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.


4) NSFW is okay, within reasonJust remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com. NSFW comments should be restricted to posts tagged [NSFW].


5) This is not a support community.
It is not a place for 'how do I?', type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.


6) No US Politics.
Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !uspolitics@lemmy.world


7) No Hit-and-Run questions.
Please don't delete your post for no apparent reason. If you plan on deleting a question later, say so in the post, or if you feel that you have a good reason to remove it, message a mod beforehand. It's not fair to the ones who took their time to answer, and it's not in the spirit of the community.


8) No Bots.
Posts or comments from bots, LLM's, AIs, Neural Networks, Transformers, or Marvin the Paranoid Android are not welcome in AskLemmy. Real humans only please.


Reminder: The terms of service apply here too.

Partnered Communities:

Tech Support

No Stupid Questions

You Should Know

Reddit

Jokes

Ask Ouija


Logo design credit goes to: tubbadu


founded 3 years ago
MODERATORS
 

One thing I always look at in post-apocalyptic literature is how they treat transportation: notably, are people still driving cars and how long can they do so and under what conditions?

Entering our current oil crunch, I think it's obvious how fragile the ecosystem around cars are, but just letting the car sit unused and untreated for as little as a month can start to introduce\ problems. The idea that you can just pop into a car that's been abandoned for 3 years, pull the keys out from behind the visor, and start driving is unrealistic.

  • Best: The Postman. We're back to walking and riding horses.

  • Good: The Last of Us, Season 1. People walk or ride horses, when our heroes DO find a working truck, it is treated as the jackpot it is--and I think it even had a spare gas tank in the back to maximize distance traveled to harvest gasoline. Realistically, gas as a fuel for fires would be a valuable enough commodity that it would have been scavenged, but they need to do some traveling and high speed dragons are not available in this genre (Reign of Fire aside).

  • Worst: Jericho. Nuclear explosions in the US pretty much wreck everything and despite the town of Jericho being completely isolated, people just drive their pickup trucks around all seasons long without comment. Horses and bicycles are maddeningly present but rarely used. I think the show thought American audiences could accept a premise where the federal government collapses after multiple nuclear strikes, but not where people in Kansas got off oil dependency--that would be too out there.

you are viewing a single comment's thread
view the rest of the comments
[–] NewNewAugustEast@lemmy.zip 5 points 8 hours ago* (last edited 8 hours ago) (1 children)

There is a lot of discussion about diesel and biodiesel, and alcohol.

But we have seen shortages of the liquid fuels before, and it is possible to run small engines on wood. They would have to convert but it is doable. Assuming there are trees or other carbon to burn.

This has been done before when petroleum was in short supply, such as in germany.

https://en.wikipedia.org/wiki/Wood_gas

You can actually use existing engines, and the gassifier is not terribly complicated. I don't know this guy or his videos, https://youtu.be/522BaxM0Jnk but it is similar to others I have seen using a bicycle as the vehicle and a standard engine as the power, wood as the power source.

There are better and worse designs, and certainly not press the button and drive, but its an option.

These were wood powered:

EDIT: I almost forgot, you can make a gas generator station and fill a bag with it to use for the engine.

Like these vehicles here:

[–] schipelblorp@sh.itjust.works 1 points 8 hours ago* (last edited 8 hours ago) (1 children)

Nice! And it's using a largely unprocessed resource, whereas food oils are processed and can be put to other uses (like food). You can't eat wood.

[–] NewNewAugustEast@lemmy.zip 2 points 7 hours ago

Some caveats:

Works best with simple engines. Newer cars with their computers and fuel injection not so great.

Much less power and efficiency, but hey its an engine and at one time there were thousands of busses, cars, tractors, and even some trains that used this.

Also, probably best to convert the wood to charcoal. Not too hard to do at scale really. I think that would be easier to manage in the combuster and last longer.