Revolutionizing motor vehicles

The new generation of ultralight automobiles could deliver the safety and muscle of today's cars but with far better mileage -- four times as much in prototypes and ten times as much in projected models. This is because in today's cars only 15 to 20 percent of the fuel's energy reaches the wheels (the rest is lost in the engine and the transmission), and since materials lighter and stronger than steel are available or on the way.