"Eh, I'm imagining short term commute trains, really. Sleeper cars are only on certain routes, and even then it's First Class... if I'm remembering correctly." Chris shrugs. "Anyway, I'm not really trying to find parallels with your world, just kind of thinking aloud."

They lapse into silence at eat some more. Might be a good time to pick up with questions of your own, so Chris doesn't feel like this is some one way, very bad interrogation.