Atlas 50006477 Trainman N 50ft Mechanical Reefer, Tropicana #142Atlas 50006477 Trainman N 50ft Mechanical Reefer, Tropicana #142 Atlas Item #: 50006477 Features: Colorful Painting and Printing Friction or Roller Bearing Trucks as appropriate The Atlas Trainman N Scale 50' Mechanical Reefer is based on cars used beginning in the 1950s for handling refrigerated loads. Following the end of World War II, the wider acceptance of frozen food nationwide caused a shift in the traditional refrigerator car (or reefer)