If all the cars ran on methenol , (a form of alcohol), that would help clean the air, as well as give the cars more power than gasoline. (it burns a blue flame). I read about a guy who''s a farmer , he also races a alcohol dragster, he makes his own fuel from the corn he grows. That would make everyone happy- the Green people and the fuel burners. And more important, the U.S. won't have to depend on Middleastern oil.....