Red Zone Cuba

Red Zone Cuba, also known as Night Train to Mundo Fine, is a 1966 American neo-noir art drama film directed by Coleman Francis, who also wrote and co-produced the film, and played the starring role. It follows the meandering adventures of an escaped convict and two ex-convicts he recruits along the way as they become involved in the 1961 Bay of Pigs Invasion, and a quest to find a hidden treasure in a tungsten mine.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.