I have replaced the windows on the driver side of the car. The windows were pitted with what looked like sand blasted glass. I thought maybe the driver's side got stone chipped because the previous owner may have lived on a gravel road and passing cars chipped that side only. (The chips don't look large enough to be from stone damage). Now I am thinking that maybe it was the sun and or environment from sun rays that damaged the glass, because the car may have been continually parked with that side toward the sun. Anyway, just as a point of curosity, I am wondering if anyone has experienced similar glass deterioration and may have thoughts on the cause of it?