Cadillac Ranch is on I-40 just outside of Amarillo Tx. The cars are painted a solid color on a random basis which lasts for a day or two before the "locals" add their own touches. They have been known to have been all painted Pink for Breast Cancer Awareness. There is so much paint ont he cars that they are well protected from the elements and since there is so much local content added they are never the same week to week.