The Copenhagen Wheel stores energy (from braking…) and provides it when you need it (going up hill…). It is good to see innovation that helps transportation and can encourage people to be more active. Order now for $799.
Related: Engineering a Better World: Bike Corn-Sheller – Separated Bike Lanes Reduced Injuries by 45% and Increased Retail Sales 49% (for nearby stores) – Bike Folds To Footprint of 1 Wheel – Sports Engineering at MIT

Cool video, that’s some clever stuff. I’ll have to wait for it to come down in price a bit though before considering it for my bike!
This is a truly beautiful design idea: simple, functional, and useful. I had’nt heard of the Copenhagen Wheel, but I have seen their competetion on Kickstarter, ‘The Flykly’, which sells for about $800 usd.
I want one…!
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