Since most of my real running is done at the club, I've had to come up with a variety of carrying cases for my trains, none of which has any sense of order. This is my latest design, one that I am pleased with. it can carry 10 85' passenger cars and 5 40'-60' freight cars or 20 to 25 freight cars alone in each tray. Each tray nests in the others. Right now I'm looking for a good lining material and am open for suggestions.