Federal car safety regulators opened an investigation Thursday into why Tesla has repeatedly broken rules requiring it to tell them quickly about crashes involving its self-driving technology that may soon be deployed in millions of its cars on U.S. roads. The National Highway Traffic Safety Administration said “numerous” incidents involving Tesla's driver assistance and self-driving features were submitted far too late — several months after the crashes instead of within five days as required. The probe comes two months after the electric vehicle maker run by Elon Musk started a self-driving taxi service in Austin, Texas, with hopes offering it nationwide soon.
