A co-worker of mine told me about this last year. It was to late to see it then so I had to wait a year.
This is a home built replica of a c-16, complete with a combine and a long caboose. This thing is really cool. The loco has rubber tires on the inside of the #4 drivers, and the pony truck turns. Im guessing it was going to be drivable. It pretty accurate. The cars are made from wood, the tender is sheet metal and even has rivets. The loco is wood and sheet metal. If it had a gauge it would be between 15" and 24".