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BLUETOOTH? In a WHEEL? Are you M.I.T. people SANE? What do you do next time? Bluetooth in every ****ink strand of grass? Come on, don't always try to invent/construct thing full of electronics.
The idea is not bad, the wheel storing energy, then releasing on demand. But i'm sure it could be made only using electric/mechanic components (electric is NOT electronic).

But this is just my opinion...