If you haven't seen this new transportation device check it out at https://superpedestrian.com/ . It's a wheel, a motor, a battery and talks to your iPhone or Android phone! All you need is a bike to mount it to and your motoring!
[h=2]Technical Specifications[/h]
Motor
US: 350W, EU: 250W
Size
26" or 700c rim
Battery
48Volt Lithium
Connectivity
Bluetooth Low Energy (4.0)
Range
Up to 50 km / 31 mi
Battery Life
1000 cycles
Smartphone OS
iOS, Android
Charge Time
4 hours
Compatibility
Single Speed or 7/8/9/10 Speed Free Hub
Top Speed
US: 20 mph, EU: 25 km/h
Brake Type
Rim brake and regenerative braking (downhill and back-pedal)
Weight
5.9 kg / 13 lbs
Dropout
120mm (single speed), 135mm (single speed and multi-speed)