Tesla has applied to test and operate autonomous vehicles in Arizona, aiming to expand its robotaxi service to the Phoenix Metro area. The company contacted the Arizona Department of Transportation to begin the certification process, expressing interest in both testing with and without a driver. A decision is expected by the end of the month. Tesla's move follows the launch of a limited robotaxi service in South Austin. The company is also seeking regulatory approvals to launch robotaxis in the Bay Area. Waymo, the Alphabet-owned autonomous vehicle company, already operates a driverless robotaxi service in the Phoenix Metro area and holds the necessary permits in Arizona and California.