Air-powered Car Asymptotically Approaches Reality

From Popular Mechanics: Air-Powered Car Coming to U.S. in 2009 to 2010 .
“Company officials want to make the first air-powered car to hit U.S. roads a $17,800, 75-hp equivalent, six-seat modified version of MDI’s CityCAT (pictured above) that, thanks to an even more radical engine, is said to travel as far as 1000 miles at up to 96 mph with each tiny fill-up. ”