Ride the train
The title, Train of Consequences, stems from the underlying theme of the book; that, similar to the train of thought, consequences are connected to one another. Any action taken leads to a set of consequences, and any action taken to deal with those consequences, spawns a whole new set, and so on. In the book, there is a particular conversation (which takes place in a train yard), where an individual makes this observation. Additionally, during their travels, Shelton and Richie meet up with an old hobo named, Dusty, who teaches them the ways of the road. One of the things that he teaches them is train hopping. This lesson is an adventure in and of itself!