Tesla investigation deepens after more than a dozen US ‘Autopilot’ crashes

Regulators to look with enhanced scrutiny after cars with driver-assistance function crashed into parked emergency vehiclesUS federal regulators are deepening their investigation into Tesla’s Autopilot function after more than a dozen Tesla cars crashed into parked first-responder vehicles over a period of four years.The National Highway Traffic Safety Administration (NHTSA) said on Thursday it was upgrading its preliminary investigation, which launched last August, to an “engineerin