The "Galaxyman" is one such art piece. Made from a used Ford Galaxy MPV, the sculpture is one of German performance artist HA Schult's latest works. Schult first displayed his 1,000(!) similar sculptures in 1996, and has brought the exhibit around the world to such places as the Egyptian pyramids and the Great Wall of China. The exhibit is currently on display in front of the Cologne Cathedral in Germany, and will touch U.S. soil later this year while stopping in New York City.
[Sources: Ford Motor Company; World Car Fans]