DRIVER WAS MAKING A LEFT TURN INTO A PARKING SPACE ON 2ND FLOOR OF PARKING GARAGE. AS THE LEFT TURN WAS MADE, THE ELANTRA GT SUDDENLY ACCELERATED BY ITSELF INTO A WALL, HITTING A POLE AND THE WALL. HYUNDAI IS INVESTIGATING. DEALER IS USELESS. RIGHT NOW UNSURE HOW TO PROCEED. EXTERIOR CAN BE FIXED, BUT WHAT ABOUT THE PROBLEM? *TR