Kato has recreated the 20th Century Limited "The Most Famous Train in the World" in N scale.  This set (106-100) includes 9 cars: Bagage/RPO car, Pullman 4-4-2 Sleeper, Club Lounge, Kitchen Dormitory, Diner, Pullman 12 Bedroom Sleeper, and a 5-bedroom Sleeper.  It also includes 9 sections of 248mm (9-3/4") Unitrack S248, and a 50.5 mm (2") straight track section with a bumper.  A special addition is the 20th Century red carpet rerailer.
 
Locomotives and additional cars are available separately.