As a scaley Hi-Railer I enjoyed that more than I should have. Enjoyable to see some of these old sets running at less than light speed. They can, too; I don't expect Cruise Commander Creep. The diesel horn sounded better than I recall (I had a 2055 steamer as a kid - still have it - but I heard a diesel or two back then).
Nice stuff. Boy, I'll bet there was a lot of coffee spilled when that section car changed direction.