You may know Chris Burden's 1970s era body art (like Shoot) from the Art since 1945 class. He has long ceased performing the physically challenging (and at times damaging) actions for which he is best known. Recent work often seems to realize children's fantasies--for instance, a skyscraper constructed from erector sets...http://publicartfund.org/pafweb/projects/08/burden/burden-08.html
Recently, Metropolis came on view at the Los Angeles County Museum of Art. "The miniature city in motion consists of 1,100 Hot Wheels-sized cars, 25 large buildings, 18 lanes of traffic, 13 trains and one human operator."
Here is a video...
I love this profile of Burden by New Yorker art critic Peter Schjeldahl.