Mercedes-Benz F600 Hygenius (2005)
With the 2005 Tokyo auto show shaping up to be one of the greenest auto shows ever, Mercedes is right on the money with this new fuel-cell concept named, rather tritely, Hygenius.
Mazda Senku (2005)
The sensational looking Mazda Senku is a four-seat sports car with the first-ever rotary-engined hybrid powertrain, not to mention some of the longest sliding doors in the business