Copenhagen Wheel turns any bike into an electric hybrid, ships early 2014 for $699
 

We can't fault you for dismissing the Copenhagen Wheel as vaporware -- it's been nearly four years since the pedal-assist bicycle accessory made its debut at the 2009 UN Climate Change Conference -- but we finally have pricing and availability to ...

http://www.engadget.com/2013/12/03/c...=rss_truncated