Turns you into a bionic human! At the +1/2 setting, an out-of-shape husband can keep up with an athletic wife. At +3, the ordinary rider has more muscle than an olympic cyclist. Not a moped, but an electrically-assisted bike: Stop pedaling, and the assist stops immediately. Charger rides like a bike. Created by GT Bicycles and AeroVironment, developers of GM's Impact and SunRaycer. 18" frame size accomodates riders from 5'-3" to 6'-3". 20 miles per change, 4 hour charge time.