The Viewliner is a single-level railroad car type operated by Amtrak on most long-distance routes operating east of Chicago. The first production cars, consisting of an order of 50 sleeping cars, entered service in 1994. From 2015-2016, 70 Viewliner II baggage cars entered service. The new baggage cars are used on all Amtrak trains with full baggage cars, both single-level and bi-level, and replaced all of the Heritage Fleet baggage cars that Amtrak inherited from the freight railroads when it was established in 1971. From 2016-2019, 25 Viewliner II dining cars entered service, which replaced all of the Heritage Fleet dining cars. In 2019, 10 Viewliner II baggage-dormitory cars entered service. The last cars to enter service were 25 Viewliner II sleeping cars in 2021.

Amtrak's Heritage Fleet consisted of the rolling stock provided to it when it assumed passenger service on commercial railroads. The name was applied to a 1977–1983 program that converted the older, mainly streamlined, cars from steam heating to head-end power. The final Heritage Fleet car was retired in 2019.