No defect found in Tesla 'Autopilot' system used in deadly Florida crash

Federal regulators have closed the investigation into the crash that killed a Tesla driver in May, saying Thursday that officials found no defects in the semiautonomous Autopilot system being used at the time. But while investigators with the National Highway Traffic Safety Administration found no flaws in the software or braking systems, a broader federal review of dozens of Autopilot crashes did point to industry-wide challenges as drivers -- sometimes inattentive ones -- increasingly rely on cars to do more of the driving for them. In this case, the driver had seven seconds to react to a danger ahead but did not do so, investigators found. Autopilot is not the same as "self-driving," though some Tesla drivers have tried to treat it that way. It is instead a more limited set of features, such as cruise control that can gauge the speed of cars up ahead and some automatic steering.