 It had also effectively ceased being a streamliner when hood unit X class diesels began hauling it between Melbourne and Albury after 1966, and rolling stock such as sleeping cars and power vans from other trains with different liveries began to appear in consists.The sitting car compartment style accommodation offered by the "Spirit of Progress", while exceptionally comfortable by 1937 standards for a 3¾ hour journey to Albury, was less than luxurious by 1962 standards for a 13¾ hour overnight journey to Sydney.Key features of the original "Spirit of Progress" consist, including the dining car and observation car, were not included in the new standard gauge service, decreasing its amenity and prestige.