WHEN PUTTING VEHICLE IN DRIVE ENGINE REVVED AND VEHICLE ACCELERATED ON IT'S OWN. CONSUMER APPLIED BRAKE, PEDAL FELT SPONGY. VEHICLE HIT THE GATE IN PARKING GARAGE, THEN A CONCRETE RAMP. CONSUMER WAS THEN ABLE TO SHIFT TO PARK AND SHUT OFF ENGINE. DAMAGE TO VEHICLE UNKNOWN AT THIS TIME, NO INJURIES. ON 11 APR 2002 WHILE BACKING UP ENINE REVVED AGAIN, CONSUMER WAS ABLE TO SHUT OFF ENGINE.*AK