This is a very interesting concept! A pedal powered gear system! This is very cool that you can have a gear system that doesn't look as clunky as the average ones we already have. Moreover the more you pedal the power it has to allow more functions and option. Ride fast in a straight alley and you can save up enough power to ride up a mountain with ease!
Not to mention how sleek it looks and the friendly raw materials used.
great hunt!