Vice president of Japan's auto giant Nissan Motor, Kimiyasu Nakamura, gestures as he introduces the company's all-new minivan Serena during a press conference at their headquarters in Yokohama, suburban Tokyo, on July 13, 2016. Nissan will release the new vehicle, equipped with autonomous drive technology designed for highway use in single-lane traffic, in late August. / AFP PHOTO / TORU YAMANAKATORU YAMANAKA/AFP/Getty Images

Vice presidents of Japan's auto giant Nissan Motor, Hideyuki Sakamoto (L) and Kimiyasu Nakamura (R), introduce the company's all-new minivan Serena during a press conference at their headquarters in Yokohama, suburban Tokyo, on July 13, 2016. Nissan will release the new vehicle, equipped with autonomous drive technology designed for highway use in single-lane traffic, in late August. / AFP PHOTO / TORU YAMANAKATORU YAMANAKA/AFP/Getty Images

Japan's auto giant Nissan Motor's all-new minivan Serena sits on display during a press conference at the company's headquarters in Yokohama, suburban Tokyo, on July 13, 2016. Nissan will release the new vehicle, equipped with autonomous drive technology designed for highway use in single-lane traffic, in late August. / AFP PHOTO / TORU YAMANAKATORU YAMANAKA/AFP/Getty Images

Vice president of Japan's auto giant Nissan Motor, Hideyuki Sakamoto, gestures as he introduces the company's all-new minivan Serena during a press conference at their headquarters in Yokohama, suburban Tokyo, on July 13, 2016. Nissan will release the new vehicle, equipped with autonomous drive technology designed for highway use in single-lane traffic, in late August. / AFP PHOTO / TORU YAMANAKATORU YAMANAKA/AFP/Getty Images

Vice president of Japan's auto giant Nissan Motor, Kimiyasu Nakamura, gestures as he introduces the company's all-new minivan Serena during a press conference at their headquarters in Yokohama, suburban Tokyo, on July 13, 2016. Nissan will release the new vehicle, equipped with autonomous drive technology designed for highway use in single-lane traffic, in late August. / AFP PHOTO / TORU YAMANAKATORU YAMANAKA/AFP/Getty Images

(FILES) This file photo taken on December 2, 2015 shows Elon Musk, CEO of US automotive and energy storage company Tesla, presents his outlook on climate change at the Paris-Sorbonne University in Paris. Tesla does not plan to disable the Autopilot self-driving function in its cars despite accidents possibly linked to it, founder Elon Musk told The Wall Street Journal on July 12, 2016. As US auto safety regulators moved forward in a probe of a fatal accident involving Autopilot in May, Musk said in an interview that owners of Tesla's luxury electric cars need more education on using the technology. / AFP PHOTO / ERIC PIERMONTERIC PIERMONT/AFP/Getty Images

Chen Rui, Deputy Director and Principal Analyst for the Oil Market Research Department at the Institute of Economic and Technology Research in CNPC delivers a speech during the opening of the VI Oil & Gas International Congress in Santa Cruz de la Sierra, Bolivia on July 12, 2016. / AFP PHOTO / Aizar RALDESAIZAR RALDES/AFP/Getty Images

Chen Rui, Deputy Director and Principal Analyst for the Oil Market Research Department at the Institute of Economic and Technology Research in CNPC delivers a speech during the opening of the VI Oil & Gas International Congress in Santa Cruz de la Sierra, Bolivia on July 12, 2016. / AFP PHOTO / Aizar RALDESAIZAR RALDES/AFP/Getty Images