After a Tesla Model S with Autopilot software in operation crashed into a transport truck in Florida in May 2016, killing the Tesla driver, an investigation by the Transportation Department’s National Highway Traffic Safety Administration (NHTSA) found no evidence that the Autopilot had malfunctioned. At the time, the National Transportation Safety Board (NTSB) concurred with the findings about the software: the system had operated as intended, but the driver’s inattentiveness, due to his over reliance on the Autopilot, contributed to the cause of his death.