"So you actually signed up? You didn't get pressganged, you got recruited legit-like? Takin' it you're from one of the Void connected worlds then?"

Why would a train be a very popular shape? So wonders the man who is used to space ships. It occurs to him then that he'd read about famous void trains but maybe that book and them articles didn't include all the boring-ass void trains that might be out there being an average commute for some folks.