The Ol' Gray Hoss (1928)
This story revolves around an old man who feels alone in the world aside from the gang who keeps him company and his old horse. He runs a horse and buggy business, but he has new competition: an auto taxi. The gang helps him to maintain his job by sabotaging the other man's.
Directed by: Robert A. McGowan
Starring: Joe Cobb, Richard Cummings, Jean Darling, Jimmy Farren, Mary Gordon, Tenen Holtz
Links: IMDb, Movie posters, Movie stills