Hi Andy, Glad that the trip to the musuem was a good one!!
Looks like the folks there copied an idea from Tyco and AHM...a tender driven steam loco!!! See red boxes in the photo
Actually the railroad at Stone Mountain Park here in Georgia has a similar arrangement....the baggage car on their train is actually an SW7 that pushes the loco and pulls the train!!!
Now I see why this loco is so spotlessly clean. But I wonder: What's the sound of this contraption? Pure diesel or do they add the chuff-chuff via speakers and Soundtrax module?