Peugeot unleashes 118 mpg HYmotion3 Compressor Concept
The two front wheels are independently powered by individual wheel-mounted hub motors and have no connection to the supercharged four-stroke 125cc engine that powers the rear wheel. Regenerative braking is all that provides power to the scooter's battery pack.
The engine shuts down when it's not needed and the electrically-driven front wheels are capable of powering the machine by themselves. The HYmotion3 is extremely fuel efficient, recording 118 miles per gallon.