I drove past this everyday and I still don't know if I like it or not. I did some Googling and found this to be a very mysterious 12 piece sculpture. It is called "Cattle Drive" by Michael Booth. I didn't get to jump out of the car and touch it to see what it was made out of, but my guess is that it is painted metal. It was pretty cool how textured everything was, I think it was overly textured so when you are driving you could see all the little details.