Smart, responsive and elegant – the Copenhagen Wheel is a new emblem for urban mobility. It transforms ordinary bicycles quickly into hybrid e-bikes that also function as mobile sensing units. The Copenhagen Wheel allows you to capture the energy dissipated while cycling and braking and save it for when you need a bit of a boost. It also maps pollution levels, traffic congestion, and road conditions in real-time.
For more see: http://senseable.mit.edu/copenhagenwheel/
Photo sources: http://www.lilligreen.de/wp-content/uploads/2010/08/cph_wheel010.jpg and http://www.looksfeelsworks.com/wp-content/uploads/2012/06/cph_wheel049.jpg