CONSUMER WAS DRIVING ON HIGHWAY AT NORMAL SPEED WHEN VEHICLE STARTED TO HYDROPLANE/ BLOWOUT OCCURRED ON THE RIGHT REAR. THREW VEHICLE INTO A BRIDGE, CAVED IN GAS TANK, END SPINNED. TOOK OFF THE ENTIRE FRONT, INCLUDING HYDRAULICS, THE HOOD WAS STILL DOWN AND INTACT. THE AIR BAGS NEVER DEPLOYED. DEALER CANNOT DUPLICATE THE PROBLEM. *AK