A breakdown in relations between President Trump and Elon Musk slammed Tesla stock Thursday, along with assets associated with the U.S. leader. Tesla shares regained some ground early Friday. Shares of Musk’s electric-vehicle maker rose around 4% in morning trading.

Musk has long promised an autonomous Tesla vehicle, with estimates of delivery that were always “two or three years away.” Now a hand-selected group will be able to see the potentially game-changing car in action in the Texas capital for themselves.

Ross Gerber said Musk's beef with Trump is a "disaster," and used the episode as an opportunity to sell more shares.