Tang Zhenping drives his self-styled wind power roadster in Banjiehe village, Tongzhou district of Beijing, April 22, 2012 file photo. The 1-meter-wide, 3-meter-long vehicle could generate electricity from wind while driving, with a maximum speed of 140 kilometres. It took the invention enthusiasts more than three months. [Wu Changqing/Asianewsphoto]
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