TL*THE CONTACT OWNS A 2006 CADILLAC STS. WHILE THE CONTACT'S SPOUSE ATTEMPTED TO PARK THE VEHICLE WITH HER FOOT ON THE BRAKE PEDAL, THE VEHICLE SURGED THROUGH THE FENCE. SHE CONTINUED TO DEPRESS THE BRAKE PEDAL AND THE VEHICLE FINALLY STOPPED. THE FRONT GRILL AND HOOD WERE DAMAGED. THE VEHICLE WAS DRIVEN TO THE DEALER IMMEDIATELY FOR INSPECTION. THE DEALER FOUND NOTHING WRONG WITH THE VEHICLE. THERE WERE NO INJURIES. THE SPEED WAS UNKNOWN. THE CURRENT MILEAGE WAS 3,362 AND FAILURE MILEAGE WAS 3,342.