I couldn't find a Z without it. Believe me, I checked....BIGTIME. I'm willing to bet I could find some on any of the folks cars who said they don't have any
Just a hunch. My 370z has it, my 2007 Titan has it, my wife's BWM has it, all my friends cars/trucks have it. With the new environmental standards affecting paint, from my understanding, there is no way around it...unless as someone said "they hand sand it with a human" between coats.