2022 Toyota Avalon UNKNOWN OR OTHER

I was driving home from work. I was on the the highway driving approximately 55 mph. All of a sudden I heard what can only be described as a gun shot or explosion. It was extremely loud and it almost caused me to run into the guardrail. I then heard glass falling onto the safety shield of my moonroof. I got home and inspected the moonroof and there was a large hole in the moonroof. The glass appeared to push out from inside the car. There were zero signs that this would happen. The moonroof is never used. It was approximately 75 degrees and partly cloudy when this occurred.