General Motors Advanced Design, California
Designers: Frank Saucedo, Steve Anderson, Jussi Timonen, Jose Paris, Loren Kulesus
This fuel-cell powered Hummer would produce oxygen. Agae-filled body panels could break down C02, a greenhouse gas, releasing oxygen into the atmosphere. When parked, body panels would fan out to catch more light, speeding the process. The 02 would be constructed from 100-percent post-consumer recycled aluminum.