However, the Norfolk to Bluefield line still exists but traffic has slowed because of its 12-mile 1.2% grade. Autoracks In the 1950s, Canadian National Railway (CN) introduced a group of innovative bi-level autorack railcars. These autoracks had end doors and were very large by the standards of the time; at long, each autorack could carry 8 completed automobiles. These autoracks were a big success and helped lead to the development of today's fully enclosed autoracks. Tri-level autoracks were developed in the 1970s. During the 1960s, autoracks took over rail transportation of newly completed automobiles in North America. They carried more cars in the same space and were easier to load and unload than the boxcars formerly used. Ever-larger auto carriers and specialized terminals were developed by NW and other railroads. The railroads were able to provide lower costs and greater protection from in-transit damage, such as that which may occur due to vandalism or weather and traffic conditions on unenclosed truck trailers. Using the autoracks, the railroads became the primary long-distance transporter of completed automobiles, one of few commodities where the industry has been able to overcome trucking in competition. Becoming part of the Norfolk Southern Corporation In 1980, the profitable N&W teamed up with the Southern Railway, another profitable company, to form the Norfolk Southern Corporation and it paved the way for today's Norfolk Southern Railway (formerly the Southern Railway) and compete more effectively with CSX Transportation, itself a combination of smaller railroads in the eastern half of the United States. Today, former N&W trackage remains a vital portion of the Norfolk Southern Railway, a Fortune 500 company. The headquarters of the Norfolk Southern Railway and the parent Norfolk Southern Corporation are near the coal piers at Lambert's Point. Passenger operations While the Powhatan Arrow (all-coach, Norfolk–Cincinnati/Columbus) was the N&W's flagship passenger train, sporting a regal maroon livery with gold trim and hauled by a J Class 4-8-4 Northern Type steam locomotive, the railroad also operated a number of other passenger trains. These include: The Cavalier (coaches and Pullmans, Norfolk–Cincinnati/Columbus). The Pocahontas (coaches and Pullmans, Norfolk–Cincinnati/Columbus). The N&W also participated in five inter-line passenger trains: Trains 1 and 2 (Roanoke–Hagerstown, Maryland) which continued in a pool arrangement with the Pennsylvania Railroad from Hagerstown to Harrisburg to New York via North Philadelphia. This allowed for a trip from western Virginia to New York, bypassing Washington, D.C. and Baltimore. In contrast