Propane has always been a good alternative for carberated cars, only lose about 10%
But how difficult is it to convert a fuel injected car.
A lot of countries also have lng. There are a lot of options out there including 50mpg+ diesel cars that this country refuses to allow. Ideally I
would like to see 3 or 4 options to jump on incase problems occur like we are experiencing now. Enthanol incase we get cut off,lng because that market
crashed making it almost free, and petroleum for the efficiency. All I need is a car and a pump and I would have no problem giving up oil.

