Compressed-Air Power: MDI Car Closer to Production

The perpetual-motion machine may be eons away, but the the first commercially viable car to run on compressed air may be at hand. The brainchild of French inventor Guy N gre, the MDI, which we first reported on in 2005, employs a novel system of compressed air tanks and an internal-combustion support engine that can… » 3/19/07 1:08pm 3/19/07 1:08pm