This documentary was in the special features section, of the DVD I purchased. Although it's an hour long, it's very informative about the production process, and the bizarre things that happened. Pay close attention to the ending credits...There's more information there about the motorcycles, even as the credits are rolling. Seeing this documentary made me appreciate the movie even more, and will answer a few lingering questions you may have from the movie.
Review of Easy Rider: Shaking the Cage
Easy Rider: Shaking the Cage
(1999 Video)
Very Interesting Look at the making of a Cult Film
21 February 2003