2018 Buick Enclave Structure

8am, Stopped at intersection. Light traffic. Green light, increased speed to 15 mph, turning left and sunroof explodes. Luckily inside shade cover was closed so no glass was able to come down.

I WAS DRIVING ON A HIGHWAY 6 IN WATERLOO INDIANA AND MY SUNROOF EXPLODED AND THE ENTIRE GLASS WAS SHATTERED AND HAD A HUGE HOLE. THE EXPLOSION WAS LIKE A SHORT GUN GOING OFF. I THOUGHT SOME ONE SHOT OR THREW SOMETHING BUT THERE WAS NO OVERPASS. I CALLED THE POLICE JUST TO MAKE SURE AND A REPORT WAS FILED