New tests confirm that in a head-to-head collision, it's better to be in the big car.
Mazda's CEO changes his tune, promising hybrids and EVs by 2015.
Big Oil has a limited attention span for renewables.
EV Innovations is unveiling a commuter-vehicle prototype tomorrow.
Segway is trying to reinvent urban transportation--again.
The technology could help the United States deal with the issue of nuclear-waste storage.
The ailing automaker bets on an incipient U.S. battery industry.
The plug-in hybrid could communicate with utilities to optimize power use.
Energy Secretary Steven Chu meets with proponents of a troubled clean-carbon project.
Mazda admits that it lacks the cash required to field its own hybrid technology.