Solar cells on the wheel recharge the batteries as you ride the E-V Sunny bicycle and they look pretty cool as well. It is available as a complete bike or as a kit to modify your existing bike.
"Canadian company Therapy Products stake claim to the invention of the first solar bicycle. The E-V Sunny Bicycle is the first all solar electric bicycle driven completely from power derived from the Sun's Rays. The bike has light absorbing Solar panels built right into the Wheels , thus creating continual power from the Sun's Rays, and maintaining a constant charge to the batteries. A 500-watt front hub motor propels the bike. The variable speed electronic controller drives the bike to speeds of up to 30 kilometers per hour."
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