Investors are betting that small companies like Workhorse will help popularize electric commercial vehicles. And Tesla aims to extend its reach.
The electric-car maker will be the biggest addition in the history of the benchmark index. Will that settle down its swings?
The chairman of Ford Motor and the great-grandson of Henry Ford is an elder statesman in an industry where C.E.O.s come and go.
Mr. Musk said on Tuesday that he had moved to be near a new factory Tesla is building outside Austin.
The Tesla Model S and the Porsche Taycan give environmentally conscious speedsters an outlet for their desires.