I only got to see the end of pw stuff, and MPC on display at Sears till Atari. I remember seeing the plastic MARX in boxes at the early Kreesge's/K-marts, but even there Lionel had the static end cap display, Marx nothing. Finding a buried CV woke me up.
That is a cool little layout. It looks like they could have been sent out easily as "kits". Many things like this are, so a back room genius could have assembled them. Some things never get looked at, or thrown away, or used, just stored, and forgotten in a corner for decades.
