The phonic wheelmotor is invented by Poul la Cour in 1878.
库尔在1878年发明了发音轮马达。
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In another tweak to the recumbent, Stoddard designed the pedals to power the front wheel instead of the rear; however, there is a motor that turns the back tire.
Only the convenience of mobile phone holder into the lighter in your car, you can hold hands steering wheel, eyes on the road, while calls, while driving a motor vehicle safety.