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.

CEO Elon Musk has long touted a driverless robotaxi, and the pressure is on the billionaire to deliver on his promises.

Elon Musk’s autonomous robotaxis slated to hit the streets of the Texas capital on Sunday after delayed launch