The GeoOrbital wheel
The GeoOrbital wheel replaces a standard bicycle front wheel to turn your bike into a powerful electric bike in 60 seconds. Commute on your own bike, on your own schedule and without exerting more energy than you like. Getting around by bike is better for you and for the environment, not to mention it's a ton of fun.
"The way it works is simple: Just snap off the front wheel of any bike and attach [GeoOrbital's] special electric wheel in its place." - Forbes