I'm really enjoying this story. The idea that the blonde, at least, is putting on a show for the man is kind of confirmed in this panel. I love her expression. One question: how long have the women been going at it? I looked it up and the distance between Reims (where I think the train started) and Gstaad (where it seems to be going) is about an 8 hour trip. Are all the later scenes snapshots from a much longer set of encounters?