Postby smj999smj » Wed Jan 03, 2018 9:49 am
It could be. Thermal expansion can cause windshields and even sunroofs to crack or shatter. Usually, it starts with a small chip in the glass which you might not notice, but not always.
Many years ago I worked in a Nissan dealer with an enclosed service write-up area. A late-80's Nissan 300ZX came in on a snowy day and had been parked with the windows closed inside the write-up area for around 20-minutes when all of the sudden the entire rear hatch window "popped" and disintegrated into thousands of tiny pieces! Sometimes, glass can develop large cracks suddenly not due to thermal expansion but simply due to stress on the glass caused by flex in the body. It happens!