I have an 08 G37s and today while driving my rear riverside window shattered there are no marks that indicate that a rock hit it or anything else may have caused it. It just spontaneously busted. Has this happened to anyone else

 

Hasn't happened to me

 

When I was a kid I was in the shop area of a Goodyear dealership, getting new tires, hanging out with the staff. Someone was asking everyone to shut up and listen for this snapping noise he was hearing. Turned out to be the rear window on this old sedan. We watched in amazement as tiny cracks appeared in the glass, making that sound. Then it started to accelerate, and suddenly spread out to the entire window. One of the techs reached out and touched it, and all the glass just shattered into the car in a million pieces. I've never seen anything like that before. It was pretty fascinating.