I read about a few on here using clay bar. My car has always felt like it had sand in the paint. Said to myself, there's no way a piece of clay is going to get that out after all the times i have washed it an it's still there. I picked some up anyway when i saw it. Today i clay bared the entire car, (it was the worse on the hood, roof, trunk.) Sides were not as bad, but could still feel some on the sides as well. Low and behold it was much easier than i thought it would be. It"s slick as a baby's bottom now.
I think it even shines more, an i have not even waxed it yet.