WAS GOING DOWN A HILL. DIDN'T NOTICE A STOP SIGN. TRIED TO STOP BUT COULDN'T IN TIME. TOOK THE CORNER AND HIT A TREE WITH MY PASSENGER FRONT CORNER AND THE JEEP FLIPPED ON ITS SIDE. SMASHED MY FACE ON THE STEERING WHEEL SHATTERING MY JAW DUE TO AIRBAGS NOT GOING OFF AND SEATBELTS NOT LOCKING. NEEDED IMMEDIATE SURGERY. THEY HAD TO SMASH THE FRONT WINDOW TO GET ME OUT OF THE VEHICLE.