I came across this boxcar and had to purchase it! I have been looking for the yellow version of this car for about five years. When my dad got laid off back in the 80's he took a contract with this company to help build a set of real train cars for an amusement park in Canada. They had some promotional KMT cars manufactured for employees at some point. I received the orange car from him. I finally found the yellow version!
Before his health deteriorated I asked him enough questions about the real train cars to track them down. Thanks to a few emails with forum members, and few emails to various parks, I was able to track the actual cars to Dorney Park and the Omaha zoo. I hope to take a trip to one of those locations this summer.