I was writing Mr. Jerry Kimble at Atlas if we were going to get a run of Union Pacific U23 b. There maybe one in the future if the truck design can be changed from the present model. But I can't see one any time soon, couple of years, as they are just now releasing a run of them and adding another run so soon seems unlikely. He did say that they would come with smoke, and that makes me recall a photo I saw of one and be nice for an outdoor exhibit. http://www.rrpicturearchives.n...ture.aspx?id=2534904. I think a run of this model in Union Pacific would sell but finding a handfull of other popular roadnames to release with it maybe harder as we go deeper into the ownership of these units. But, as a B truck design in O scale and a model they have patterns for it seems possible. Years are not on my side and waiting for a model isn't high on my list. if it happens it happens. Like the smoke outside and not in the house. Cough cough.
Phil