This InterMountain Railway Company Pullman-Standard Superdome Smooth-Side Full-Length Dome is based on smooth-side cars originally used by the Milwaukee Road from the 1950s up to the 1970s. Several of these popular cars operated as Amtrak and Canadian National cars and in 2018 a few are in excursion service. This Centralia Car Shops model is fully assembled and ready-to-run and features installed weights, 36′ metal wheelsets and operating Micro-Trains(R) knuckle couplers.