Many windsheilds get stress fractures. If it is hot and the air is way to cold, or vise versa, the windsheild will crack in the pressure points. My first windsheild cracked after I got done driving and it was 15 degrees. I had the heat cranked and when I parked it and came out it had mystriously rained and the windshield butsted. the first windshield costed 459 to replace.
the second windshield was replaced last week when a bullet when through it, that costed like 375.