Super cool glimpse into the greener future options of 2 wheeling.. During light-throttle cruising or closed-throttle deceleration, the power from the internal combustion engine is used to charge the batteries while the electric motor is left to provide drive. When the batteries are fully charged the internal combustion engine can shut itself down, allowing the vehicle to cruise solely on electric power. According to Honda "These advanced features allow the hybrid scooter to achieve 1.6 times the fuel economy of the Dio Z4 (when riding on flat ground at 30 km/h) and to produce 37% less carbon dioxide". The Dio Z4 is a similarly-sized Honda 50cc scooter which uses a traditional internal-combustion engine. Prototype Honda 50cc Hybrid Scooter | 
