Now this is art. It's the Metropolis II installation by Chris Burden at the Los Angeles County Museum of Art, and it looks amazing.
The fully-automated and gigantic track features 1,200 cars and 13 toy trains zipping around quickly, over and over again. It's pretty hypnotizing! And it's exactly what I would have made when I was seven years old if I also had an engineering degree. Awesome, awesome, awesome.