CAR UNEXPECTEDLY ACCELERATED IN A REMOTE AREA OF A PARKING LOT IN A MALL. WENT OVER A CURB, CROSSED A GRASSY AREA AND STRUCK A TREE. DRIVER INDICATES THAT BRAKES WERE APPLIED TO NO AVAIL. REAR DRIVING WHEELS WERE DEPRESSED INTO THE GROUND AFTER THE CAR WAS STOPPED BY THE TREE, INDICATING THE POSSIBILITY THAT THE CAR WAS STILL ACCELERATING AFTER IT WAS STOPPED BY THE TREE. *TR