I WAS DRIVING ON THE HIGHWAY WHEN MY HEADREST AIRBAG DEPLOYED FOR NO REASON. IT SMACKED ME IN THE BACK OF THE HEAD. THERE WAS NO IMPACT FROM MY VEHICLE HITTING ANYTHING & NO SUDDEN BRAKING. IT POPPED AND SMACKED ME IN THE BACK OF MY HEAD. I WAS ON MY CELL PHONE AT THE TIME BUT IT WAS SITTING IN MY CUP HOLDER & I WAS USING MY AIRPODS. *TR*DT CONSUMER STATED HE HAS A STIFF NECK AND MAYBE A CONCUSSION BUT DID NOT SEE A DOCTOR. VEHICLE HAS BEEN REPAIRED.*JB