Tesla has sent out invitations to a small group of people to join the limited test of its robotaxi service in Austin, Texas, which is tentatively set to start on Sunday, according to posts and email screenshots on social media.

The email outlined several parameters, including that users were limited to a geofenced area that excludes airports, could run into unavailability due to bad weather and can only hail a robotaxi between 6 am and midnight. This restrictive launch will reportedly only offer 10 cars and comes after a delay from an initial launch date on June 12.

Elon Musk previously said Tesla’s robotaxi service would have ‘no one in the car.’