When Sly Stallone was in college, he and his buddy, John Herzfeld worked on a project together called Horses. It was a film that involved time travel. Sadly it was never completed. Here is a photo from the project that I cleaned up a bit. Sly and Herzfeld stayed lifelong friends and both went on to careers in Hollywood. They worked together on the feature films Reach Me and Escape Plan: The Extractors.