Dirty Car Art
Click above to see the simultaneously sublime and stupid Dirty Car Art by Scott Wade. There you will find a whole gallery of windshield art, using dust as it's medium.
This is just cool. One image is of the Sistine Chapel, with God and Man reaching out to each other and squeezing a Pillsbury Dough Boy. I can only imagine what these images look like from the inside of the car. Gives new meaning to the phrase, 'Eat my dust'.