Which will make fuel much more expensive, and thus less consumed (which is really what is needed). Obviously that will also mean poor people can't travel very f

Which will make fuel much more expensive, and thus less consumed (which is really what is needed). Obviously that will also mean poor people can't travel very far, but what are you going to do about that? Maybe just hand out a universal ration of 1 gallon of biofuel per year per person.