Tesla, which produces the luxury Model S sedan and Model X sport utility vehicle, aims to become a high-volume automaker in a matter of years
The compact sleek car with no grille features a roof that is a panoramic pane of glass from front to back.
The controversy came to public attention last week after Volkswagen acknowledged it had deliberately deceived officials about how much its diesel cars polluted.
"I probably wouldn't do much," Buffett said when asked what he would do if he ran the Fed.