An employee plugs-in a charge connector to a Tesla Inc. Model S 90D electric vehicle at the company's showroom in Hanam, Gyeonggi Province, South Korea, on Wednesday, March 15, 2017. Tesla produced almost 84,000 vehicles in 2016 and plans to make half a million in 2018, then 1 million in 2020. Photographer: SeongJoon Cho/Bloomberg via Getty Images