WHILE VEHICLE WAS ON A SLIDE INCLINE EMERGENCY PARKING BRAKE ENGAGED, AND VEHICLE STARTED ROLLING OUT OF DRIVEWAY. OWNER WAS ABLE TO STOP VEHICLE FROM ROLLING, BUT NOT BEFORE IT HIT ANOTHER PARKED VEHICLE. THIS WAS THE THIRD TIME THIS HAS HAPPENED SINCE VEHICLE WAS PURCHASED IN DECEMBER OF 1999. DEALER WAS NOT ABLE TO FIND ANY PROBLEM WITH THIS VEHICLE. IGNITION WAS NOT RUNNING WHEN THIS HAPPENED. *AK