US federal auto safety regulators have initiated a formal safety investigation into Tesla's autopilot driverless assistance system, citing 11 collision incidents with parked emergency vehicles while the system was active. This resulted in 17 injuries and one casualty according to The National Highway Transportation Safety Administration ( NHTSA ) reports . Tesla's Autopilot feature has been under scrutiny by safety watchdogs before. The newest probe will cover 765,000 vehicles, which ...