This is an amazing guy I found when searching the web the other day. He does art on the back of dirty cars.

http://www.dirtycarart.com/gallery/index.htm

    I just think the concept alone is pretty cool, plus he’s good at it! I would really love to write an article about something like this because to me it just seems fascinating.

    The coolest thing about it is that he does it just for the fun of it.