Mr. Musk says the driverless taxis could begin ferrying passengers on Sunday in Austin, Texas, where other companies already have similar cars on the road.

Tesla promises a cheaper robotaxi solution that will be easier to scale than competitors. Accepting this vision comes with several assumptions.

CEO Elon Musk took to X, the social media site he owns, to post the results of a recent drug test, which show he tested negative for ketamine, ecstasy, cocaine, amphetamines and other drugs a few days earlier.