. Sleeping cars In the late 1970s Amtrak converted two Amfleet I coaches into sleepers ( 22900 and 22901). Two prototype Superliner roomette modules were installed, displacing twelve seats. The cars were used on the Washington, D.C.–Cincinnati, Ohio Shenandoah. Regular sleepers returned to the Shenandoah in 1979 and the two coaches were returned to a standard configuration. These conversions were termed "Ampad." See also Budd SPV-2000: a self-propelled diesel multiple unit using the Amfleet shell Notes References Further reading External links Amfleet roster at On Track On Line New Amfleet II Railcars brochure Amfleet I Interior Refresh Program Amtrak rolling stock Budd Company Rail passenger cars of the United States Train-related introductions in 1975