MY HEADREST DEPLOYED SUDDENLY AND BROKE APART INTO TWO PIECES WHILE I WAS DRIVING APPROXIMATELY 45 MPH ON A FLAT, LEVEL HIGHWAY. BEING SO CLOSE TO MY EARS, THE NOISE WAS VERY LOUD. MY HEAD WAS THRUST FORWARD IN A DOWNWARD FASHION. I INITIALLY THOUGHT I WAS REAR-ENDED, BUT REALIZED THERE WERE NO OTHER CARS AROUND ME. IT WAS VERY FRIGHTENING TO HAVE THIS HAPPEN WHILE DRIVING. I HAVE APPROXIMATELY 56,000 MILES ON MY CAR. I AM THE ONLY DRIVER OF THE VEHICLE AND DO NOT TRANSPORT CHILDREN. THERE WAS NO ABUSE/NEGLECT ON MY PART THAT COULD HAVE CAUSED OR CONTRIBUTED TO THIS SITUATION. MY NECK IS A LITTLE SORE, BUT I SUFFERED NO SERIOUS INJURY. I DO NOT FEEL IT IS SAFE TO HAVE MY SISTER IN MY CAR BECAUSE SHE HAS HAD A PREVIOUS NECK SURGERY. IF IT HAD HAPPENED TO HER, I DO NOT BELIEVE SHE WOULD HAVE BEEN AS LUCKY. THIS IS AN EXTREMELY DANGEROUS DEFECT.