. >> reporter: it is cambridge massachusetts work workshop, we, where biderman is reinventing the wheel>> and it helps you. it pushes you multiplying your power up to ten times. >> so it makes it easier? >> much he easier. >>dw<çyou got it. >> it works like this. replace a regular bike wheel with a copenhagen wheel, the bike now functions like an electric hybrid car a tiny computer tells the motor when to kick in, plug the wheel into the wall to recharge it or just ride. >> if you are going downhill it)r$rñ actually brakes you automatically and stores your energy in the battery. if you are going unhill it gives you an extra push. >> 30 miles at speeds up to 20 miles per hour. biderman wouldn't show us the inner workings fearful of copycats. >> it gives you maximum boost. >> and it is all it takes to program this. >> it makes hills feel like they are flat. >> now it is an easy ride. >> in response to your pedaling. >> oh, goll. >> it is a whole greatÑr learning about about you sanjay sarma is director of digital learning at mit every day items like thermostats and locking are becoming sm