Waymo has launched its public, driverless robotaxi service in Miami, marking its sixth U.S. city and solidifying its lead over competitors like Tesla in the race to deploy autonomous ride-hailing.

The National Transportation Safety Board has opened an investigation into Waymo autonomous vehicles after reports they illegally passed stopped school buses in Austin, Texas.

Waymo's autonomous taxi service has expanded to Miami, where paying customers can hail rides from the robotaxis, Waymo announced on Thursday.

Austin ISD is once again requesting that Waymo suspend its autonomous vehicle operations during morning and afternoon school bus hours amid an ongoing increase in school bus traffic violations.

Waymo’s autonomous driving fleet has traveled more than 127 million miles with only two fatal crashes, for which it wasn’t considered responsible.

Waymo, however, faces a different regulatory journey since, unlike Tesla’s supervised FSD feature, Waymo robotaxis are designed to operate without any driver at all – currently a bridge too far for Australian road rules that consider the presence of a driver as a given.