Waymo has a big lead in the nascent U.S. robotaxi market, and is opening up in more cities.

Waymo has a big lead in the nascent U.S. robotaxi market, and is opening up in more cities.

Waymo driverless vehicles are expanding to Denver, Las Vegas, San Diego and Tampa as the robotaxi company prepares for a wider public rollout later this year.

Waymo announced it will begin offering robotaxi rides in Las Vegas, Denver, San Diego, and Tampa, Florida, as competitors continue to expand.