Texas enacts legislation requiring a permit to operate self-driving vehicles just before Tesla's planned launch of a robotaxi trial.

The company debuted its autonomous ride-hailing service Sunday. The limited program is invite-only and uses around 20 cars—signs that Tesla has a long way to go to catch up to its robotaxi rivals.

Elon Musk's Tesla enters the self-driving taxi game, an industry with big names like Waymo and Zoox in the U.S.