Artist Chris Burden has spent the past 4 years of his life creating this giant installation entitled Metropolis II. Metropolis II features 1500 Hot Wheels toy cars and various electric trains that make their way around a micro-city.

Each Matchbox car has a magnet attached to the bottom of it which allows the cars to be pulled back up the track in a continuous motion.

Says Burden of his micro-city:

It wasn’t about making a scale model of something. It was more to evoke the energy of a city.

Pretty nuts huh?