TL*THE CONTACT OWNS A 1995 JEEP GRAND CHEROKEE. WHILE DRIVING APPROXIMATELY 55 MPH, THE ACCELERATOR PEDAL SUDDENLY DEPRESSED TO THE FLOORBOARD AND THE VEHICLE SURGED FORWARD. THE CONTACT ENGAGED THE BRAKES BUT THE VEHICLE WOULD NOT STOP. THE CONTACT USED THE EMERGENCY BRAKE BUT THE VEHICLE STILL WOULD NOT STOP. THE CONTACT NOTICED SMOKE FROM THE TIRES; SHE SHIFTED TO PARK AND THE VEHICLE FINALLY STOPPED. THE VEHICLE HAD NOT BEEN INSPECTED OR REPAIRED. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 200,000.