BBC's James May test drives the GM Hy-Wire concept car

The Hy-Wire uses hydrogen fuel cell propulsion and drive "by-wire" technology. There are no mechanical linkages between the chassis and the driving cage, enabling the car shell to be removed within 15 minutes.Introduced at the Paris Motor Show in 2002, General Motors hopes to have this "car of the future" in affordable production by the year 2010.

General Motors Hy-Wire Website