The Copenhagen Wheel fulfills every commuters dream. This device simply replaces your rear wheel and gives an extra boost as you pedal by measuring your effort, instead of using a throttle. Not only does it power you but it also powers itself, as you bike, the wheel is able to capture energy when braking or going down hill that it stores in the integrated battery and put back into the wheel. It also has wireless capabilities which can help you taylor the wheel to your needs and keep track of your ride. The Copenhagen Wheel runs at $800, much better than an electric bike.
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