MY HEADREST DEPLOYED VERY SUDDENLY WHILE I WAS DRIVING GOING ABOUT 40 MILES AN HOUR AND FOR NO REASON...MY CAR WASN'T HIT AND I DIDN'T EVEN HIT A BUMP. IT SOUNDED LIKE AN EXPLOSION AND THE HEADREST HIT THE BACK OF MY HEAD SO HARD MY CHIN HIT MY CHEST. I'M VERY LUCKY I WAS NOT KNOCKED OUT AND DIDN'T CAUSE AN ACCIDENT.*DT CONSUMER STATED SHE SOUGHT MEDICAL ATTENTION BUT STILL HAS DISCOMFORT ON HER NECK.*JB