Waymo's service now operates in Phoenix, San Francisco and Los Angeles, covering more than 500 square miles of public roads.

The company dropped its digital velvet rope in June and opened its robotaxi service to all San Franciscans, allowing them to hail rides via the Waymo One app. Opening to the general public proved to riders, and internally, that the company's fleet of AVs can work well in the traffic conditions of a complex urban environment.

In July, Alphabet's then-CFO, Ruth Porat, announced a multiyear investment by Google's parent into Waymo on an earnings call, which amounted to $5.6 billion in total, with $5 billion of that coming from Alphabet.