Astros train-related giveaways

I was on Ebay looking for past Astros giveaways that were train related, and didn't find a whole heck of a lot. I found one from a few years ago that has Orbit on the train, but he doesn't even ride it? Why doesn't the train and Bobby the train guy get no love from the Astros as far as promotions? We get tons of stuff from Orbit. Every where we look, there's the Shooting Stars team. But never anything with the train. Anyone have any insight?