Tesla has started giving rides in driverless Model Y SUVs in Austin. Details are still sparse, but limited service is open to vetted and invited riders.

The vehicles will have safety monitors and may not operate in bad weather, making them more restricted than the fully autonomous vehicles promised by Elon Musk.

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.