The new ScaleTrains HO scale SD40T-2 “Tunnel Motor” in SP colors is the subject of this unboxing and product review. This model is part of the ScaleTrains “Rivet Counter” line. When they were built, Tunnel Motors were unique to the Southern Pacific and Denver & Rio Grande Western. This model train is one of the most anticipated releases of the year, and comes complete with LokSound DCC and sound! Dan evaluates the locomotive’s packaging, prototype accuracy, paint & detail, and how well it operates and conforms to applicable standards. Southern Pacific fans won’t want to miss this one!