Dirty Artwork

My husband, as I've said here before, is a big fan of StumbleUpon. He does it all the time and I hear, at least once or twice a week, "I left something up on the computer I thought you might be interested in". And yesterday, I was actually interested in something he found. He found some pictures on Static of art drawn in the dirt on car windows. At first I thought they might be photshopped pictures (photo skeptic that I am) but then I did a little googling and found a news article about it and the web site of the artist, Scott Wade with explanations of how they were done. Now, I'm no art critic but these are pretty amazing. Who knew?