'phantom braking' slows down the vehicle, it does not stop it and can be overridden, at any time, by a driver by pressing accelerator. None of the incidents re

'phantom braking' slows down the vehicle, it does not stop it and can be overridden, at any time, by a driver by pressing accelerator. None of the incidents reported to NHTSA resulted in an accident, but braking is unexpected and unwelcome - likely reason why drivers reported it. Given that earlier reports suspected loss of power - stopping could not have been abrupt. We don't even know if the car was on Autopilot, but we do know that driver was 74 years old, with higher chance for medical emergency.