A sobering quarterly report puts more prssure on Tesla’s chief executive to make good on his promises for fully autonomous vehicles.

Elon Musk thinks Tesla could be worth more than the next five most valuable companies combined one day, thanks to autonomous driving and robotics. However, Tesla stock plunged 47% from its record high,

Musk’s management style has always been a lightning rod. His focus on speed and impatience allows him to advance technologies at a breakneck pace.