Originally Posted by
Dahon.Steve
Regenerative braking works better in cars because the weight of the vehicle will recharge the battery a little to make it useful. However, a bicycle hub will not capture alot of energy and you'll expend more energy moving the heavy hub each time you start.
Hence my question. In the video the energy required to spin up a free standing wheel is close to nothing compared to what you need to make a difference on the road.