Tesla shares fall after CEO Elon Musk webcasts while smoking marijuana

Tesla Inc Chief Executive Elon Musk was filmed smoking marijuana and wielding a sword on a webcast, just hours before the automaker said its recently-appointed accounting chief would leave, the latest in a string of unusual behaviour and executive departures that have stunned investors.Shares of the electric carmaker tumbled more than 6 percent on Friday to $263.24, with investors on edge after a tumultuous August during which Musk proposed and then abruptly pulled the plug on a go-private deal.[caption id="attachment_5142461" align="alignnone" width="1024"] Representative image[/caption]Chief Accounting Officer Dave Morton resigned after just one month in the job because of discomfort with the attention on the company and pace of work during that time, Tesla said in a filing on Friday. It later said that Chief People Officer Gaby Toledano would not return from a leave of absence, just over a year after joining.Later on Friday, Tesla named a new president of automotive operations, promoting eight-year Tesla employee and former Daimler truck exec Jerome Guillen into the role overseeing all automotive operations and reporting to Musk.That move, described in a company blog with several other promotions as a result of board and management discussions, gives Musk a seasoned auto industry veteran to lean on at a time when some investors have called for a new chief operating officer. Shares barely moved after hours, when the promotions were announced.