I watched a documentary about a man who lives on a train with his family. He drives the train around a steel mill. The train never leaves the mill.

Large factories like steel mills always have their own train network. At leas there in Europe. I life close to an old steel mill that was turned into a landscape/architecture park. The railways were turned into bicycle lanes and make up about 80 % of my daily commute to work.

I know, I am very lucky.