Pacific 231 is a 1949 short film directed by Jean Mitry.
Its soundtrack uses Arthur Honegger's orchestral work of the same name for a tribute to the steam locomotive, and includes incredible close-up footage of driving wheels, running gear and railroad operations, mostly taken at speed, and cut/choreographed to the music.
The film was awarded the Short Film Palme d'Or at the 1949 Cannes Film Festival.