The KU:RIN uses a reversed air conditioner compressor, which creates mechanical energy through the expansion of compressed air
Although battery-powered cars may no longer be considered quirky and weird, automobiles propelled by compressed air are still perhaps thoughts of as a little ... fringy. The MDI Air Car looked promising, although development of the vehicle seems to have been at least temporarily suspended. Toyota Industries Corporation, however, recently brought some attention to the technology. On September 9th, its one-off KU:RIN set a new speed record for compressed air cars, at 129.2 km/h (80.3 mph).