While driving at highway speeds (65 mph), i heard a loud "pop" followed by glass raining down around me. i pulled over and examined my car to find the perimeter of the sunroof entirely missing and the interior portion of the sunroof shattered. there were large chunks of glass inside the car along with pieces of metal. the sunroof was open at the time. the temperature was in the low 70s. there were no overpasses nor were there any trucks around me. there was no impact mark on the glass to indicate road debris. *tr