What is "The Train Room" in Update supposed to symbolize?

[Lief 🗽]

An older gentleman's escape from reality.

Yes I think it symbolizes that Papa Bushie, one of the tale's true heroes, has finally achieved some happiness. He works sixty to eighty hours a week to come home to a loveless marriage and a son that literally uses the money he earns to pay for pornography, but the train room is his escape.