Uber is launching its first driverless rides through a partnership with Waymo, the self-driving taxi company owned by Google parent company Alphabet. While Uber is operating autonomous vehicle rides in other cities, this is the first time it is offering rides without a vehicle operator present in the front seat.

The launch comes five months after Uber and Waymo announced their partnership, and will have driverless rides start Thursday in Waymo’s 180-square-mile service area in the Phoenix area.