SLOWED DOWN TO PULL INTO PARKING SPOT AND SUDDENLY CAR PICKED UP SPEED AND CRASH THROUGH A VACANT STORE FRONT. CAR STOPPED AFTER HITTING A WALL AND MOVED WHAT EVER WAS ON THE OTHER SIDE OF THE WALL. AIR BAGS DID NOT DEPLOY DRIVER OF CAR WAS SHAKEN UP BUT NO PHYSICAL INJURIES. CAR DAMAGED TOWED TO JUNK YARD AND INSURER TOTALED VEHICLE.