Just a lot of hot air ? Air powered cars

I was watching the preview of next week's CNN NEXT. They'll be talking about the new air-powered car from e.Volution. Pretty interesting concept. According to the BBC article (linked earlier), it's going to cost 1.5 Euro for a whole tank (of compressed air) - I guess thats around $2 - heck I'd love to get something like that if it can drive as well as my Volvo S40 - it beats the $20 I pay per tank for gas now.

BTW, for the engineer in you, check out the 'HowStuffWorks' for details on how the car works.