ON 11/5/17 MY 2007 PONTIAC STEERING LOCKED AND I WAS IN A MAJOR CAR CRASH. THE STEERING LOCKED AS I TRIED TO LEAVE A GAS STATION AFTER GIVING A STRANDED PERSON A JUMP. I TURNED CAR OFF AND BACK ON AND IT WAS FINE. PROCEEDED HOME AND GOT ON THE HIGHWAY, AFTER DRIVING ABOUT 45 MINUTES THE STEERING LOCKED AGAIN AS I WAS CHANGING LANES, I HIT THE BACK OF A TRUCK AND MY CAR LOST CONTROL. MY CAR WENT ACROSS LANES OF ON COMING TRAFFIC AND FLIPPED AND RAN OFF THE ROAD.