During the tests, Waymo has put a safety driver inside, ready to take control if anything goes awry. It's a significant step for Waymo towards adding the self-driving cars to its ride-hailing fleet, which it plans to do next year.

Waymo revealed last year it was adding I-Pace EVs to its self-driving fleet. The cars had been on the streets in the Bay Area before to collect reams of road data, though they were under the control of a human driver. Waymo and Jaguar Land Rover have a deal that could see as many as 20,000 self-driving I-Pace cars joining Waymo's ride-hailing fleet within the first two years of service.