Take a nostalgic trip aboard the magnificent passenger trains of the 1950s in this cross-country rail adventure, featuring legendary lines in the East, South and West. After traveling on such vintage trains as the B&O, the Pennsylvania, the Chattanooga, the St. Louis, the Santa Fe and the Union Pacific, the exhaustive special examines the challenges facing America's great railroads in the transitional years of the 1960s and '70s.