to make a complete train. The units were fitted with third-rail shoes, electric traction motors, and associated gear for operation into Grand Central Terminal, though this was short-lived. In the New Haven's later years, the set was broken up, and used with regular New Haven RDCs, and by Amtrak into the 1980s. In 1961, five cars were built under license in Australia for the Department of Railways New South Wales. They were shorter and narrower than the North American models. In the late 1970s Budd sought to replace the aging RDCs with a new design, the SPV-2000. The body shell was based on an Amfleet coach, not the RDC. Like the RDC it was long, stainless steel, and powered by twin diesel engines. The design was beset with mechanical problems, and Budd sold only 30 cars. In 1966, Tokyu Car built 31 DR2700 series cars for the Taiwan Railway Administration. Tokyu got a licence from the Budd Company and the bodywork of the DR2700 series was based on the RDC. There were 25 powered driving cars (each with a Cummins diesel engine producing ) and 6 trailers. The DR2700 series was the fastest train in the following decade with a top speed of . They were withdrawn from regular service in 2014 while several powered driving cars were still active for special trains. From 1982 to 1984 Tokyu Car built 45 of a heavily specialized, meter-gauge RDC design for the Taiwan Railway Administration under license from Budd. Designated the DR2800 series, the units are organized into 15 permanently-coupled three-car sets (30 powered driving cars and 15 trailers). Like other RDC trainsets before them, each cab unit only has a cab at one end and two cab units bracket a trailer in a standard set. Unlike other RDC sets, however, the trailer's diesel engine is used exclusively to provide head-end power for the entire three-car set, while the engines in the driver cars are used for propulsion. To prevent dependency on the trailer's engine for cooling, the cooling fans of the driver cars are driven hydraulically instead of electrically. This configuration results in each set producing for a top speed of . All 15 sets are still in service as of 2022. History United States The vast majority of RDCs were owned and operated by railroads in the United States. They could be found on branch lines, short-haul intercity routes, commuter