2005 Mercedes Benz F-Class Hygenius

Mercedes Benz has used the Tokyo Motor Show to unveil its last two crazy F-Class concepts, the F400 Carving Concept and the F500 Mind Concept. Following tradition the company will unveil the F600 Hygenius hybrid-electric fuel-cell vehicle later this month at the Tokyo Motor Show. The combination of MB's fuel cell technology with a high-torque electric motor increases the range of the F600 to 250 miles, nearly 150 miles more than the company's current F-Cell vehicle.

Also check out MB's site for a history of its experimental vehicles and past F-Class concepts.

[Thanks eMercedsBenz for the tip]