The Alphabet unit starts commercial operations in its fourth city, where rides can be booked with Uber’s app. Uber is also providing charging and maintenance services.

Uber will shift into a new gear in Austin, Texas, on Tuesday when its ride-hailing service will begin dispatching self-driving cars to pick up passengers. The autonomous option is being provided through a partnership that brings together Uber and robotaxi pioneer Waymo,

Uber will automatically match users with a nearby Waymo. Those who prefer a human behind the wheel can opt out and request a different ride.