Compressed air engines are fairly common for both cars and other purposes. I wouldn't call it bunk science - it's certainly nowhere near as bad as the 'runs on

Compressed air engines are fairly common for both cars and other purposes. I wouldn't call it bunk science - it's certainly nowhere near as bad as the 'runs on seawater' cars. http://en.wikipedia.org/wiki/Compressed_air_vehicle http://en.wikipedia.org/wiki/Compressed_air_vehicle