I was rear-ended while stopped at a red-light by an inattentive driver. The resulting impact cause the power driver's seat to drop to the end if it's track and the backrest to drop down onto the rear bench. If there was a passenger behind me at the time of the accident, they would have been crushed by the seat with the headrest potentially crushing their chest, while their legs would have been crushed due to the seat suddenly sliding so far back. Motors in seat still function, but cannot move seat. When attempting to lower the backrest a clicking noise can be heard.