New Addition to Heavyweight Passenger Consists Introduced in the mid-1920s as Pullman plan #3958, 14-section cars were popular on many trains for their less expensive sleeping accommodations. As a result, many were rebuilt and modernized, remaining in service for years. These new models have all the features of other Walthers HO Scale heavyweights and come decorated in the same color schemes, so it's easy to assemble a matched consist.