Uber Technologies on Tuesday is beginning autonomous ride-hailing in Atlanta with Alphabet unit Waymo after offering the service in Austin, Texas, since March.

The launch, if successful, is poised to propel the businesses of both companies. Uber, which has locked in partnerships with 18 autonomous vehicles companies, said it has an annual run rate of 1.5 million mobility and delivery AV trips on its network.

Waymo robotaxis launch operations in parts of Atlanta under the Uber app, representing another partnership between the two former rivals. The Atlanta launch is the first for Waymo in an East Coast state,