In this Thursday, Dec. 12, 2013 photo, Assaf Biderman, co-inventor of the Copenhagen Wheel and Associate Director of the SENSEable City Laboratory at MIT, poses with his invention at Superpedestrian, ... more 
In this Thursday, Dec. 12, 2013 photo, Assaf Biderman, co-inventor of the Copenhagen Wheel and Associate Director of the SENSEable City Laboratory at MIT, poses with his invention at Superpedestrian, his venture-backed company in Cambridge, Mass. The Copenhagen Wheel is a human/electric hybrid bicycle engine built into a bicycle's back wheel. Pre-orders for the Copenhagen Wheel are being taken with delivery expected by May 2014. (AP Photo/Stephan Savoia) less 
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Associated Press | Photo By Stephan Savoia
Wed, Dec 18, 2013 2:25 AM EST