Elon Musk | For Bloomberg News / by Troy Harvey

From left, Chairman and CEO of Tesla Elon Musk, CTO of Tesla JB Straubel and Senior Advisor to Panasonic Yoshi Yamada speak with the media after a tour of the Tesla Gigafactory located in Sparks, NV, on Tuesday, July 26, 2016 Photographer: Troy Harvey/Bloomberg

From left, Chairman and CEO of Tesla Elon Musk, CTO of Tesla JB Straubel and Senior Advisor to Panasonic Yoshi Yamada speak with the media after a tour of the Tesla Gigafactory located in Sparks, NV, on Tuesday, July 26, 2016 Photographer: Troy Harvey/Bloomberg