Auto windshield damage comes in two forms. You can have a windshield chip which can be a minor repair, or you can have a more significant windshield crack that poses more of a health risk to divers.
When you have a windshield chip, there is most likely a starburst pattern of small cracks. If these aren’t treated, they can spread.
However, when you have a cracked windscreen, these might not show any sign of impact and can occur from something as having your car air-conditioning on when it is hot outside in Las Vegas. The same can happen in colder climates when the heating is on. It is the difference in temperature that can cause these cracks.
If you have a small crack, you may possibly be able to have a windshield crack repair performed.