If you think the Stonefridge above is weird, here's something else: Carhenge, a replica of the famous Stonehenge. It was built by Jim Reinders in 1987 using 38 automobiles! Links: Official Website | Carhenge [wiki]
Stonehenge-related posts: Maryhill Stonehenge | Brazilian Stonehenge? | Stonehenge in a 15th Century Text
My visit eventually included a trio of senior citizens, with one trying to navigate in a wheel chair.  Also a couple of edgy, punky girls.  Roadside attractions: bringing all Americans closer!
http://www.flickr.com/search/?q=carhenge&w=49413207%40N00
Also cute, at Cadillac Ranch, a parent was teaching a kid to proper use of a spray can...
http://www.flickr.com/photos/rkimberly/227702721/