CAR WAS COMING UP TO SPEED ON THE HIGHWAY WHEN THE TRAFFIC STARTED TO SLOW DOWN. THE BRAKES WERE APPLIED WITH THE VEHICLE SPEED AT APPROXIMATELY 45 MPH AND THEN THERE WAS A SENSATION OF SUDDENLY BEING PUSHED FORWARD. THE CAR SPEED SEEMED TO INCREASE EVEN THOUGH THE BRAKES WERE BEING FORCEFULLY APPLIED, WHICH RESULTED IN THE TIRES LEAVING SKID MARKS ON THE PAVEMENT. THE CAR DID NOT COME TO A STOP BEFORE REAR-ENDING THE VEHICLE IN FRONT OF IT, WHICH RESULTED IN DAMAGE TO THE FRONT BUMPER OF OUR CAR BEING CAUSED BY THE OTHER VEHICLES TOW HITCH MOUNT. THE DRIVER OF THE OTHER VEHICLE DID NOT COMPLAIN OF ANY INJURIES AT THE TIME OF THE ACCIDENT INVESTIGATION BY THE LOCAL POLICE DEPARTMENT.*AK