Now this product will require you to trim the automobile windshield chip repair area and then sand around the area about to out with a heavier grit sandpaper like a grit this gives it something to bite too. Trim down into the foam a little to, so that you make like a little groove for the compound to lay in.

It's the same thing with a windshield. Why would anyone want to repair a windshield which is the only thing that protects you from oncoming objects to your face? Having a solid windshield in your car rather than a repaired one is probably safer and to me makes more sense.
If you do decide that fix auto glass is your best bet, you have a few choices. First of all, make sure you check to see if your insurance covers it. In a lot of instances it does. The problem is that many policies have a deductible that is higher than the cost of the replacement or repair job. If that is the case, you will have to pay for it yourself.
If you have insurance that will cover windshield repair with a low deductible, this may be a good option. Many companies that specialize in windshield repair will pay the deductible for you provided it's under $100. If you call ahead to make an appointment most of these companies can replace the windshield in less than an hour. If you don't make an appointment, you may have to wait a few hours if there are many customers in front of you.
Now's the time to top up all the essential fluids that keep your auto purring like a kitten. Get your ownership guide out of the glove box and learn how to check and add what's needed. Switch to a thicker oil to counteract the thinning effect of the hot summer weather. That way you'll be assured the engine's parts are adequately protected.
Not all chips and cracks can be repaired when windshield damage occurs. It is definitely worth the time to have any damage evaluated by a professional to avoid further cracking and damage and eventual replacement.