Re-inventing the wheel - MIT's Copenhagen Bike Wheel

Now this is pretty cool innovation...

senseable.mit.edu/copenhagenwheel/

 

 

 

What if you haven't got a smartphone?

I love the energy capture bit, and the fact you can fit it to an ordinary bike -  but can I have it without the smart phone please or do I need that in order to tell it when I want an energy boost? 

 

Also, is this a flywheel or a battery?

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