2000 CADILLAC DTS DEVILLE TOURING SEDAN. DIAMOND WHITE WITH TOUPE. WITHIN SIX MONTHS OF OWNERSHIP MY CAR WAS IN THE DEALER MORE THAN ME DRIVING. HALF THE VALVES WERE REPLACED ON A NEW CAR. I FILED UNDER THE LEMON LAW. WAS TOLD ON MY 24,000 MILE CAR THAT UNDER INDIANA LAW I COULD GET A REPLACEMENT. NO ONE INFORMED ME ABOUT A RUNAWAY PROBLEM OR A DEFECTIVE MOTOR. MY CAR ON THE EXPRESSWAY TOOK OFF ON ITS OWN AS IF SOMEONE HAD TURNED THE CRUISE CONTROL ON. I ONLY KNOW WHAT IT FELT LIKE. I REMEMBER CHECKING THE GAS PEDAL WITH MY FOOT AND COULD TELL IT WAS DOWN AS IF STUCK LOWER IN A DEPRESSED POSITION. I TRIED TO MOVE IT BACK UP AND IT CAME BUT FELL BACK AS IF STUCK THERE. I THEN PANICKED AS I WAS IN CHICAGOLAND EXPRESS AND FOUND A LONG OFF RAMP TO GO OFF THE EXPRESSWAY. AS MY CAR KEPT GOING I STOOD ON THE BRAKE WITH TWO HUNDRED POUNDS AND COULD FEEL THE ANTI LOCK BRAKE TAKE OVER. I ALSO DOWN SHIFTED THE SYSTEM IS SPEED BLOCKED AND WOULD ONLY GO INTO SECOND. THE CAR WENT ON A CURVE BEFORE LEAVING THE HIGHWAY OFF RAMP. IT HIT AN EMBANKMENT, TORE OFF THE OIL PAN AND TRANS COVER, AND FLATTENED ALL TIERS AS IT WENT UP AND OVER TWO LANES AND A MEDIAN BEFORE RESTING IN THE NORTHBOUND LANE DIRECTION WHEN I EXITED SOUTH. MY BYBACK FROM THE BETTER BUSINESS BUREAU CAME TWO DAYS LATER INFORMING ME THAT THE ENGINE IN THEIR OPINION WAS DEFECTIVE. NO ONE BOTHERED TO TELL ME HOW BAD THAT CAR WAS FROM A MECHANICAL PROSPECTIVE UNTIL I ALMOST DIED. THEY ORDERED GM TO BUY IT BACK.