routes, and even long-distance trains. The Western Pacific Railroad used a pair of RDC-2s to operate the Zephyrette, a supplement to the California Zephyr. The two cars ran between Oakland, California and Salt Lake City, Utah, , three days a week. Examples of shorter intercity services were the Chicago, Rock Island and Pacific Railroad's Memphis, Tennessee–Amarillo, Texas Choctaw Rocket and the Baltimore and Ohio Railroad's Daylight Speedliner. The latter ran between Pittsburgh and Philadelphia and included full dining service. A notable example of the RDC's flexibility occurred on the Pennsylvania-Reading Seashore Lines, where a single train would depart Camden, New Jersey and split into multiple trains to serve different destinations on the Atlantic coast. The largest RDC fleets were in the Northeast United States. The New York, New Haven and Hartford Railroad (New Haven) acquired 40 RDCs, which it called "Shoreliners", in 1952–53. By 1955 these accounted for 65% of the New Haven's passenger routes. This achievement was eclipsed by the Boston and Maine Railroad, whose fleet grew to 108 by 1958. The B&M's RDCs operated 90% of the company's passenger routes, including its extensive commuter operations around Boston, Massachusetts. The results in commuter service outside the B&M were mixed. Budd had not designed the RDC for commuter service and discouraged operators from using it to haul coaches. The Long Island Rail Road and Chicago and North Western Railway, which had extensive networks in Long Island and Chicago, respectively, evaluated the RDC but made few orders. Conversely, the Reading Company's 12 RDC-1s lasted on the Philadelphia–Reading and Philadelphia–Bethlehem routes well into the SEPTA era. For several railroads the RDCs, because of their low overall cost and operational flexibility, were the last passenger trains in operation. Examples include the Duluth, Missabe, and Iron Range Railway, the Duluth, South Shore and Atlantic Railway, the Lehigh Valley Railroad, and the Northwestern Pacific Railroad, where RDC service survived until the formation of Amtrak in 1971. Many RDCs remained in service throughout the 1970s and 1980s. Amtrak acquired 24 (including three from the Roger Williams), mostly for use in Connecticut. The Massachusetts Bay Transportation Authority (MBTA) acquired the B&M's fleet and continued operating them until 1985. The Alaska Railroad acquired five RDCs, three from SEPTA and two from Amtrak between 1984 and 1986. These were all sold or out of service by 2009. Trinity Railway Express acquired thirteen RDCs from Via Rail in 1993 for