MY CHILDREN AND I WERE STOPPED STUCK IN TRAFFIC ON I-75 N IN ATLANTA, GA HEADED TO THE NORTH GEORGIA PREMIUM OUTLETS WHEN MY DAUGHTER'S HEADREST DEPLOYED WHILE SHE WAS SLEEPING. THE DEPLOYMENT OF THE HEADREST WAS SUDDEN AND CAUSED HER TO WAKE UP FROM HER SLEEP. SHE STATED THAT IT WAS VERY PAINFUL AND CAUSED HER NECK AND HEAD TO HURT.