Ford’s new Mustang.

Nissan’s sixth-generation redesign of the 370Z.

Honda’s concept hydrogen-powered, three-seat FC Sport.

BMW Concept 7 Series ActiveHybrid combines a V-8 gasoline engine with a low-power electric motor. Uses 15 percent less fuel than a comparable internal-combustion engine.

Mini E concept car.

Ford’s hybrid version of its Fusion sedan.

Nissan Cube has been on display at several past auto shows, and will finally go on sale in 2009.