I don’t think cars run on gasoline at all. I think that, after the crisis of the 70′s, car manufactures figured out how to make their products run on air, but when the oil companies objected they agreed to hornswoggle consumers into believing that gas was still necessary: A fuel hole that goes nowhere, a device in the useless tailpipe that produces smoke, and a mechanism that shuts down the car if the gas needle ever reaches “E.”
Think about it: you never actually see any of the purported “fuel” you put into your Chevy: you put a nozzle into your gas tank hole, you wait a few minutes, you take it out, and then you gotta pay thirty bucks.