Seems like a pretty creative idea. You would almost have to use two of the wheels. Wheelchairs pivot around when you apply power on one side, to turn. You'd need a controller that would keep the wheelchair tracking straight, or offset the power, and maybe a joystick to initiate a turn. These 'wheel' ebikes are wireless/bluetooth, and have the processing power of a smartphone. It would be something to design with software, in many ways.Hmmm that made me think of something.. Why can't the Copenhagen be used on a wheelchair? Would make an easy conversion.. just need to limit top speed to something sensible. Could have two of them for 2 grand.