TL THE CONTACT OWNS A 1999 BUICK PARK AVENUE. THE CONTACT STATED THAT THE VEHICLE SUDDENLY ACCELERATED WHILE BACKING OUT OF THE DRIVEWAY AND FAILED TO BRAKE. WHEN THE VEHICLE WAS STARTED, THE CONTACT HEARD A LOUD POPPING SOUND AND NOTICED A LOT OF SMOKE COMING FROM THE TAILPIPE. AS A RESULT, THE VEHICLE CRASHED INTO THE NEIGHBOR'S YARD AND A TELEPHONE GUIDE WIRE. AN INDEPENDENT MECHANIC WAS CALLED TO HAVE THE VEHICLE TOWED AND DIAGNOSED. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. THE DEALER AND MANUFACTURER WERE NOT CONTACTED. THE FAILURE MILEAGE WAS 152,000.