Tesla has been testing a robotaxi service in the Bay Area for the past few months, Elon Musk said during the company’s earnings call Wednesday. The company’s employees have been able to summon an autonomously operated Tesla vehicle for trips using the company’s prototype ride-hailing app, Musk said. The vehicles arrive with safety drivers behind the wheel, ready to intervene in case anything goes wrong. But Musk said the vehicles are operating autonomously using the latest version of the