Alphabet’s Waymo is launching paid driverless robotaxi rides in Denver, San Diego and Tampa, according to multiple reports. Waymo had previously operated in other U.S. cities, and its expansion increases the number of markets where it provides commercial services.

Separately, Amazon’s Zoox is expanding its autonomous-vehicle program. The reports say Zoox begins testing in Houston and San Diego, adding new locations for its driverless vehicles. Quartz and Seeking Alpha frame the developments as part of broader efforts by both companies to scale operations across U.S. cities.

While the outlets align on the main locations and the distinction between Waymo’s paid service and Zoox’s testing, their coverage emphasizes different aspects of the scale. Seeking Alpha highlights Waymo’s growth alongside Zoox’s move into additional cities, while Quartz focuses on the start of paid rides and the concurrent geographic expansion of Zoox’s trial operations.