I WASHED MY 2001 JEEP GRAND CHEROKEE AT A COIN OPERATED CAR WASH. I CLIMBED INTO THE CAR, STARTED IT UP AND SHIFTED FROM PARK TO DRIVE. THE CAR WENT TO FULL THROTTLE INSTANTLY ON IT'S OWN. I APPLIED BRAKES BUT THAT HAD LITTLE AFFECT AND THE CAR RAPIDLY ACCELERATED OUT OF THE CAR WASH STALL TOWARD A BRICK WALL APPROX. 20 FEET AWAY. I STEERED THE CAR INTO A TREE AS I FELT IT WOULD BE A SOFTER CRASH AS OPPOSED TO A WALL. THE CAR BOUNCED OFF OF THE TREE AND CONTINUED AT FULL THROTTLE INTO THE DRIVEWAY OF THE CAR WASH AS I CONTINUED TO PUSH ON THE BRAKE PEDAL AS HARD AS I COULD. I FINALLY TURNED THE KEY OFF AND STOPPED. THIS HAPPENED VERY QUICKLY AND I WISH I WOULD HAVE REACTED SOONER. THE LEFT FRONT FENDER AND GRILL WERE DAMAGED AND I HAD THE CAR TOWED TO A REPAIR SHOP. I FEEL FORTUNATE THAT NOBODY WAS HURT AND I AM VERY INTERESTED IN FINDING THE CAUSE OF THIS . *TR