It's happened to me, while my 2010 Equinox was parked in my driveway. The rear hatch window spontaneously shattered. No apparent cause, no other damage except shattered glass nuggets (not really shards, not really sharp) all over. It's never happened to me before, but I see by this forum thread that it can happen, and that puts my mind to ease for an explanation.
Unfortunately, a high $200's repair. It will be the 2nd repair (the 1st on my dime) for the car, now 8 years old. Fortunately, there are glass repair vendors in this small burg in NW Georgia.
Fortunately, it happened between rain showers so the interior stayed dry. Unfortunately, it happened on late Saturday on the Memorial Day weekend so NOBODY is answering their phones.
I moved the red scooter (1st generation Miata) out of the garage and had just enough room to put the Nox inside, cause Alberto is on the way.