The Copenhagen Wheel Dec 18, 2009 14:03:38 GMT -8 Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by aj1152 on Dec 18, 2009 14:03:38 GMT -8 The idea has been around for a while--turn wasted "braking" energy into usage energy--but it seems like they've finally figured it out. The video at the bottom is interesting.www.bikeradar.com/news/article/prototype-wheel-uses-braking-energy-to-power-bike-24400