It may happen to us all at some time or other. We drive along, and everything is fine. Then, something flies into the air from under a tire of the vehicle in front of you. The vehicle didn't mean to throw it at your vehicle, but there it is, coming at your vehicle and very quickly. It's a rock, and it cracks your windshield or severely pits it. Now, what are you going to do? You may know that driving with a cracked windshield is dangerous, in that it impairs vision and may just damage your windshield even…