Federal regulators have launched an investigation into Tesla's new driverless taxi service, following its recent launch. The probe focuses on whether the vehicles comply with safety regulations. Tesla began offering rides in the vehicles just days before the inquiry was announced. The company's autonomous driving technology has been a subject of ongoing debate. Officials are examining the safety protocols of the vehicles. The investigation comes amid growing concerns about the reliability of driverless systems. No immediate penalties or rulings have been announced. The outcome could impact the future of autonomous vehicle regulations.