Upon reflecting the inspiration TF members have abundantly and generously provided me over the years, I pulled up this old vid. The 100% Marx string shown there is a direct result of TopTrain's extraordinary collection. Without Top Train, I never would have explored this fascinating side track.
The fellow who has this track laid upon the carpet is a 26-year hogger on a mainline railroad, and a cherished friend. He collects fine scale HO models of every sort of railcar he sees, which number in the 100's. His enormous collection of fine-scale locomotives reflect many of the prototypes he has laid eyes on.