CNET slide show:
Tokyo Motor Show 2005: Alternative fuel concepts
Slide 12 of 20
Mazda RX-8 Hydrogen RE
Unlike conventional fuel-cell vehicles, the RX-8 Hydrogen RE combusts hydrogen in its rotary engine. The car also carries a regular gas tank, and the driver can switch between fuels on the fly. This system makes it a good transition vehicle for a partially implemented hydrogen-fueling infrastructure, although it runs about only 60 miles on hydrogen.
Production version: Probably not.