Just saw the promo The Narrow Margin (1952) Monday at 10:00AM (EST)
The majority of the film takes place upon the RKO "Golden West Limited" set as it rattles and rolls through movie magic very believably towards Los Angeles. It's a work of Studio/Stage/Special Effects Art, the great design of the various rail car sets, the lighting effects, plus an all immersive sound design. This is all intercut with second unit exterior location material and stock footage that convey the illusion of " the jornada", a road picture on rails. There are not many road pictures as tight as this one just judging it visually and audibly alone. One of my favorites 10/10
This is one of my favorite movies. As best I can tell, The Forty-Niner was an actual Southern Pacific/Union Pacific/Chicago & Northwestern joint train between Los Angeles and Chicago. This was train they arrived in Chicago on.
Central Pacific Railroad's The Golden West Limited was fictitious. The CPRR was a subsidiary of the SPRR at the time.
However, the Santa Fe did operate The California Limited between Chicago and Los Angeles via La Junta CO. Most passenger car exteriors are of Southern Pacific cars.
This is probably first movie in which I first identified Marie Windsor and have been a fan ever since. Same for Charles McGraw, although I recognized the face.
The film was remade in 1990 as Narrow Margin with Gene Hackman and Anne Archer. Though based on The Narrow Margin, it is fairly different. It is set primarily in Canada and uses VIA Rail Canada's Canadian.
While I like The Narrow Margin better, they are both good movies and well worth watching.