In 1974, more than a decade before eco-minded artists thought to create a Carhenge in Nebraska, artists found a blank canvas in the form of the vast plain of the Texas Panhandle. There they embedded a series of junked Cadillacs in the same cosmic alignment as the pyramids of Giza in Egypt.
The radical San Francisco art collective Ant Farm placed an evolving range of 10 Cadillac models from 1949 to 1963 nose-first in the ground in a wheat field. Passing motorists aren't just encouraged to visit this colourful but rusting monument to the American dream, close to the legendary Route 66 highway, but to make their transient marks with spraycans.