Tesla Inc. TSLA has been given the green light to start testing self-driving robotaxi cars with safety monitors in Arizona. This is another step in the company’s effort to roll out its ride-hailing services across the country.Check out the current price of TSLA stock here. Arizona Permits Phoenix Metro TestingThe Arizona Department of Transportation confirmed on Friday that Tesla has received approval to test robotaxis in the Phoenix Metro area, with safety drivers on board, according to Reuters. Tesla had ...