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Bicycles are everywhere on Chinese roads, along with thousands of electric scooters. This one indicates 50Km/h at full speed but that's probably a touch optimistic (didn't go full speed in this video) On a full charge with an 80Kg+ rider using mostly full throttle this one will do just under 20 miles before pedal power is needed (it's not as hard as you might think to pedal them). A full charge costs only around 1¥ (10p) so you are looking at about 1300 miles per gallon with zero emissions (of course, with electric vehicles the emissions are passed on elsewhere to the power stations/disposal of batteries). The bikes only cost around 2000¥ (£200, £80 of that is the battery). Interestingly, the drive motor is the rear wheel hub itself, the drive chain is just for the manual crank. Update: Have now fitted a cycle computer speedo to get the true speed - max speed so far has been about 36Km/h, so about 22 Mph! Also max battery range in winter is about 25 Km, (15 Miles) before she's just about out of juice. Should be better in warm weather.