Mercedes F800 concept can be plug-in hybrid or fuel cell powered *and* navigate curves under 25mph with cruise control | Inhabitat - http://www.inhabitat.com/2010...
"The car, set to be unveiled at next month’s Geneva Motor Show, features a top speed of 155 mph, sliding doors, a 360-degree collision detection system, and a cruise control system that can navigate curves under 25 mph. On the green side of things, the plug-in hybrid version of the vehicle offers a lithium-ion battery with a storage capacity of over 10 kWh. The car can run on pure electric power for 18 miles at 75 mph before switching into hybrid mode." - Kurt Starnes