So I have this strange thing on my windshield, and I'm tried of having the dealer look at me funny. On either side of the windshield, about 2/3rds of the way up there are two concentric circles about 1.5 and 2 inches in diameter. You can only see them in very bright (morning/afternoon) sunlight. If you rub your hand over them they seem to go away. If you windex the windshield they seem to go away. But the next day or so, they reappear. I keep thinking maybe this car had it's windshield replaced (they never disclosed it), and these are the marks from the suction cups that hold the glass. Regardless, what the h--- is it, and how do I get rid of it?