When a car owner realizes there's a giant crack growing across his windshield it's often too late to fix the windshield and it must be completely replaced. It is for this reason that there are windshield repair kits that can be purchased by any car owner and will generally be a great help in making sure that a small divot or a tiny pockmark doesn't turn into a giant crack. It is often the case as well that an insurance company will happily pay for any preventative measures for making sure a divot doesn't turn into a crack that means the entire windshield has to be replaced.