The Gasoline Engine Powered Bicycle Wheel The 3G Stepper: Vertical Motion Powered Bicycle
Jun 01
Hitting the market in Q1 of 2007 this gas powered wheel can fit most bicycles with a 26" wheel. You can do about 20 miles an hour. It takes about 15 minutes to switch tires. I have heard it gets great M.P.G. too. Time to mod your bicycle!

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