CRUISE CONTROL WAS SET ON 70 MPH WHEN UNEXPECTEDLY A VEHICLE JUMPED IN FRONT OF CONSUMER WHO THAN WENT TO APPLY BRAKES, BUT CRUISE CONTROL DID NOT DISENGAGE. TRIED PUSHNG OFF BUTTON, STILL DID NOT DISENGAGE ,CAUSING THE CONSUMER TO PULL TO THE SIDE ONTO MEDIAN WHERE TIRE WAS PUNCTURED. AS A RESULT, VEHICLE ROLLED OVER. DEALER CANNOT DETERMINE WHY CRUISE CONTROL DID NOT DEACTIVATE. *AK