Now this is an interesting idea. Three-wheeled motorbikes offer stability, but two wheels are more maneuverable. The Sway Lithium electric trike from Sway Motorsports combines both features with their new tilting system. It may look cool, I don't know, but this is rather intriguing for an older person who wants to save gas, but doesn't want to pedal or risk a motorcycle falling on them. Oops, now I've completely ruined the cool factor. -via the Presurfer
http://en.wikipedia.org/wiki/Piaggio_MP3