TRAVELING ON FREEWAY AT APPROX. 20-25 MPH. IN STOP AND GO TRAFFIC, APPROX. 4PM. THE CAR IN FRONT OF ME STOPPED SUDDENLY, I ATTEMPTED TO BRAKE HARD, BUT THE BRAKES DID NOT RESPOND. I THEN ATTEMPTED TO STEER TO THE SIDE BUT I COULD ONLY GO SO FAR. I HAD THE FEELING THAT I LOST POWER. I COULD NOT GET OUT OF THE CAR AFTER IMPACT BECAUSE THE POWER LOCKS DID NOT WORK. I WAS TOLD THAT THE HEAD LAMP WAS EMBEDDED INTO THE BATTERY.*AK