2005 CADILLAC DTS Unknown Or Other Problems

THE FACTORY INSTALLED OPTIONAL GLASS SUNROOF OF 2005 CADILLAC DEVILLE DTS SPONTANEOUSLY "EXPLODED" AND SHATTERED. BROKEN GLASS RAINED DOWN INSIDE THE VEHICLE AND OVER THE BACK OF THE VEHICLE ON TO THE ROADWAY BEHIND WHILE TRAVELING STRAIGHT OVER A UNCROWDED HIGHWAY AT 62 - 63 MPH APPROXIMATELY AT 6:30 AM ON 6/2/17. SUNROOF WAS CLOSED. THE INTERIOR SUN SHADE WAS OPEN. EXTERIOR TEMPERATURE WAS ABOUT 60F. INTERIOR TEMPERATURE WAS ABOUT 75F. THE CAR HAS APPROXIMATELY 103,500 MILES ON IT. THERE WAS NO PREVIOUS DAMAGE TO SUNROOF OR INDICATIONS OF PRIOR DAMAGE TO THE SUNROOF. THERE WAS NO SOUND OF CRACK LIKE WHEN ROCK HITS THE WINDSHIELD OR SOUND OF OBJECT HITTING THE CAR OR SUNROOF PRIOR TO THE "BANG!" AS THE SUNROOF EXPLODED. TRAFFIC WAS LIGHT ON DIVIDED HIGHWAY AND WERE NO TRUCKS IN AHEAD, OR CARS VERY NEARBY. IT WAS AN UTTERLY UNEVENTFUL AND NON-EXTREME DRIVE IN TERMS OF...