You KNEW I'd just have to chime in on this one, didn't you. I thought I had gone over this many times, but for those who haven't already been bored to the point of extended crying, I'll do it again. My aplogies to those of you who have heard me say this. Dust, dirt, and junk in the air and on the highways creates a PITTED windshield in time. Unless all your driving is limited to city side streets, you probably have some rash in your windshield. Yes, it looks like "sand". Yes, it can happen on the racetrack in one outing, or over a period of years on the street, it just depends on your locale. NO, you can't "buff it out". It is most noticeable when facing the sun, obviously.
The only fix is a new piece of glass, and your insurance company will normally NOT replace it for just that. If there is a substantial "crack" in it, they will. It's that simple. We would all love to have a perfectly clear and new windshield every time we drive, but it just isn't possible. My advice: DRIVE THE CAR and enjoy it. You never know when your windshield might get broken and then you can have your ins. co. pay for one and be done with it. GET THAT FULL GLASS COVERAGE! pete the ex glass installer