ON SUNDAY NIGHT (11/10/19) AROUND 5:15 PM, I WAS DRIVING DOWN THE LEFT LANE OF A 2-LANE HIGHWAY AT ~55 MPH. THE CLOSEST VEHICLE WAS NO LESS THAN 5 CAR LENGTHS AHEAD OF ME. RANDOMLY, THE ORANGE "BRAKE" LIGHT CAME ON IN THE DASH AND THE CAR AUTOMATICALLY SLAMMED ON THE BRAKES ALMOST TO A COMPLETE STOP CAUSING MY HEAD TO JOLT FORWARD. LUCKILY THE CAR BEHIND ME WAS ABLE TO STOP AS I STARTED TO ACCELERATE AGAIN. I BELIEVE THERE WAS NOTHING IN FRONT OF ME OR ON THE ROAD THAT SHOULD HAVE CAUSED THIS SAFETY FEATURE TO ENGAGE. THIS WAS VERY DANGEROUS AND SCARY. I WOKE UP THIS MORNING IN EXCRUCIATING PAIN FROM MY NECK AND SHOULDERS DOWN TO MY LOWER BACK. THE PAIN HAS BEEN GETTING WORSE THROUGHOUT THE DAY AND IS NOW RADIATING DOWN MY ARMS AND I HAVE LIMITED RANGE OF MOTION. LAST NIGHT, I FIGURED OUT HOW TO TURN OFF THE AUTOMATIC BRAKE FEATURE AND HAVE NOT TURNED IT BACK ON TODAY.