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A sign stands outside a Tesla Motors Inc. showroom in London, U.K., on Tuesday, Jan. 10, 2017. Tesla customers in the U.K. may find their Christmas cash goes a little further than expected after the U.S. electric-auto manufacturer's plans to raise prices 5 percent in the U.K. have been put off until Jan. 15 from the original beginning-of-the-year deadline. Photographer: Chris Ratcliffe/Bloomberg via Getty Images

A sign stands outside a Tesla Motors Inc. showroom in London, U.K., on Tuesday, Jan. 10, 2017. Tesla customers in the U.K. may find their Christmas cash goes a little further than expected after the U.S. electric-auto manufacturer's plans to raise prices 5 percent in the U.K. have been put off until Jan. 15 from the original beginning-of-the-year deadline. Photographer: Chris Ratcliffe/Bloomberg via Getty Images