I WENT OFF ROAD AT 45 MPH AIRBORN STRUCK A VERY LARGE TREE WHICH CAUSED VEHICLE TO ROLL OVER VIOLENTLY LANDING ON ITS TOP. NO AIR BAGS DEPLOYED, BOTH MY WIFE AND I WERE EJECTED FROM THE SEAT BELTS ONSTAR WAS NOT NOTIFIED. I NOTICED BRAKES ACTING STRANGE JUST BEFORE LEAVING THE ROAD, THEY DIDN'T SLOW THE VEHICLE AND DIDN'T "CLICK" LIKE ANTILOCK BREAKS SHOULD. VEHICLE WAS A TOTAL LOSS, WINDSHIELD AND DRIVERS WINDOW BROKE, SEVERE BUCKLING OF HOOD, PASSENGER SIDE PUSHED BACK TO THE TIRE, FRAME TORN IN SEVERAL AREAS, DUCT AND LOWER DASH AREA DISPLACED, SDM WAS DOWNLOADED SHOWING INCOMPLETE DATA, SDM DATA DOES NOT SUPPORT THE AMOUNT OF DAMAGE AND KNOW FACTS. MY WIFE HAD TO BE AIRLIFTED TO TRAUMA CNTR WITH SERIOUS INJURIES, MY INJURIES WERE PUT ON HOLD SO THAT I COULD BE WITH HER. *NM