[zejn]

I disagree it's a chicken-egg problem, nor is it not worth buying an EV (aka "going green").

You can charge an EV with electricity made from several different energy sources. You could even charge it with gas or diesel generator, if such a need would arise. You can't really fill an ICE car with home-brewed gas.

The real issue a) range and b) if your car use maps well to an EV's need to have it plugged in for several hours at a time.

[boozy12345]

I mean, you can run an ICE on home-brewed ethanol.

You can even use solar to distill it.

You're probably going to want a small farm though...

[hollerith]

Distillation requires feed stock. Is it even possible to grow the feed stock by using less energy than you get from the ethanol?

[zejn]

... yep, you could, though I don't think a small farm would cover my yearly needs for gas.

A small roof can cover an EV.

Best thing here is electrons are very pure, no matter the source. Chemicals - not so much. Distilled alcohol still has a significant amount of water, and if you're trying to get biogas, that one needs to be desulfurized. It's just messy.