Grandson & Grandfather

I wonder what he is thinking about? Probably dreaming up another way of setting up his wooden train tracks or, as he calls them, "bits". Older train buffs have often noted that the hobby frequently skips a generation; grandfather and grandson sharing an interest which has not bitten the son. Same with this family. It does make me wonder if my grandparents had any interest in trains. Certainly not that I am aware of: one was a baker whom I hardly knew and the other an engineer for the Paisley mills. I suspect the only time either of them thought about trains was when they were going off on holiday!