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An electric bike (R) used by Amazon sits parked along the pavement at a central business district in Beijing on November 29, 2012. AFP PHOTO / WANG ZHAO (Photo credit should read WANG ZHAO/AFP/Getty Images)

An electric bike (R) used by Amazon sits parked along the pavement at a central business district in Beijing on November 29, 2012.      AFP PHOTO / WANG ZHAO        (Photo credit should read WANG ZHAO/AFP/Getty Images)