Originally Posted by TitaniumFred
Nope, not near any train tracks. I've discovered that I can scrape them off with a fingernail. It's like they're stuck on the surface of the wax. The whole car is covered with them except the hood and the roof. That's why I'm thinking brake dust. I don't think it's contaminants as the metal doesn't seem to be involved. I do park outdoors all year though.
Oh don't do that. You should never scrape with your fingernail, you could mar the clear coat. Such damage can probably be buffed out, but you should never do that.
I once had a silver car and when I was washing it I noticed that there were tiny oil spots all over it. They were very fine, and you had to look real close to see them. I'm guessing I drove behind someone that was burning a lot of oil for a while and it accumulated on my car. Clay bar took care of that just fine. It's good stuff.