Green Cars (Matthew Paul Schroeder)
This new form of artwork takes the concept of the "green" automobile very literally. As you can see from the pictures in the link these cars are covered with real live grass. Not only does covering your car in grass make your wheels look extra fly it also provides shade and a natural cooling system for the car. This natural cooling saves energy that would normally be used for air conditioning. It could also be said that this car "balances out" the emissions that the car gives off but that's most likely not true unless you covered a hybrid car in grass.