Today, federal safety investigators opened a new investigation aimed at Tesla's electric vehicles. This is now the 14th investigation by the National Highway Traffic Safety Administration and one of several currently open. This time, it's the automaker's highly controversial "full self-driving" feature that's in the crosshairs—NHTSA says it now has four reports of Teslas using FSD and then crashing after the camera-only system encountered fog, sun glare, or airborne dust. Of the four crashes that sparked this investigation, one caused the death of a pedestrian when a Model Y crashed into them in Rimrock, Arizona, in November 2023. NHTSA has a standing general order that requires it to be told if a car crashes while operating under partial or full automation.