The stand-alone carmaker, which works with Ford and Volkswagen, says it has started operating without a driver in two of the eight cities where it is developing its technology.

The Pittsburgh-based Argo AI has pulled drivers out of its autonomous cars in Miami and Austin, although it is still under testing. Its commercial partnerships with Walmart and Lyft still have backup drivers in both cities. General Motors and its subsidiary on autonomous cars Cruise operate in San Francisco, and Alphabet’s Waymo there is also left without a driver.

San Diego-based TuSimple completed an 80-mile route to Arizona late last year without human intervention.

Argo says this is the first company to operate without a driver in two U.S. cities, according to the Associated Press. But Argo is not the first company to operate without a driver. Waymo, a division of the parent company’s parent company Google Alphabet, has been testing a driverless driving service near Phoenix since 2020. In March, the company announced it had begun transporting employees on Jaguar I-Pace electric SUVs to San Francisco without drivers.