Premise: Boxcar Bertha is a 1972 American romantic crime drama film directed by Martin Scorsese. It is a loose adaptation of "Sister of the Road", a pseudo-autobiographical account of the fictional character Bertha Thompson, written by Ben L. Reitman. It was Scorsese's second feature film.
Hypothesis: Martin Scorsese had to work with many people to film and release Boxcar Bertha.