Three Wheel Electric Mobility Scooters and Trikes are designed for anyone who wants to feel self sufficient with class! Large batteries and an all-in-1 differential/motor provide lots of watts of power! Many safety features ensure your INDEPENDENCE with rear wheelie bars included on some models! (A speed control knob is included to reduce max speed for the cautious driver.) These electric 3-wheelers are classified as power chairs or mobility scooters even though they can cruise at speeds from 4 to 22 mph. You won't feel your age when you drive these zippy trikes around!!