Cars Running on Compressed Air.
"The engine is "fueled" by a system of high-pressure air tanks. Built by EADS, an aerospace firm, the tanks are constructed of lightweight carbon-fiber."
They Have working Prototypes Already too.
"In Europe, a fleet of one dozen 2010 MDI AIRPods is already set to serve as passenger and cargo shuttles in cooperation with Air France and KLM airlines."
"MDI has already licensed its air-power technology to Indian carmaker Tata Motors." (Limted To India)
It Will cost a penny a mile to run.
"MDI claims running costs amount to only €1 per 200 km (a penny per mile)."
It is very Cheap Too!
"The starting price of €6,000 ($8,380) will be nearly halved, thanks to various bonuses and green-car sales incentives awarded by the government." (Europe)
Source InsideLine
http://www.edmunds.com/insideline/do/Drives/FirstDrives/articleId=151246?tid=edmunds.il.home.photopanel..4.*