Our tech-focused crony, Gizmodo, recently featured this hybrid-powered Yamaha taxi (by hybrid, we mean the Fred Flintstone kind: electric and feet). Yamaha designed the tri-wheeler as transportation to be used during the World Expo in Aichi, Japan, where cars won't be allowed.
Yamaha Hybrid Pedal Taxi [Gizmodo]
Related:
Peglegs of the Auto Industry: Three-Wheeled Cars [internal]