From BikeRumor: “GreenWheel is an all-in-one electric powered wheel being tested by MIT scientists. It contains the motor, battery and electronics all inside the hub, with only the throttle having to be mounted on the bicycle’s frame.”
Sounds interesting, particularly since you could (conceivably) swap the wheel on and off, depending on whether your route that day needed an e-boost. Around $200, recharging as you pedal, long lifespan. No word on weight but battery technology is getting pretty impressive on that front. Still in testing phase at MIT. Full report from Discovery News.
Looking at photo I’m wondering about the spoke pattern and stability. Otherwise it looks compatible with existing bike technology. Right on! er, Ride On!