BACHMANN BIG HAULERS 90015 G Scale Electric Train Set ROCKY MOUNTAIN EXPRESS. The locomotive and all train pieces are complete and work fine. Transformer is included and I’ve also included a new 9V battery to install in the rear of the tinder. This train runs fine inside or outside, see video of my outdoor track. The train chu chu work fine, however I didn’t check the smoke. I have included a bottle of LGB smoke oil for the smoke generator. Original box is included but shows some damage. This is a fairly rare Rocky Mountain Express big Hauler train with 20′ of indoor track. The “Gramps” car has an interesting history here in Colorado. This car alone makes this train fairly rare.