Hello. I am trying to recall the name of a film, may have been CBS Children's Film Festival or The Saturday Film Festival (abbreviated, edited version). It was animated. Featured a man who had been transported back to King Arthur's time. During the movie he constructs a modern motorcycle to (?fight/duel). At the end, he wakes up form a fever or illness back in modern times. He goes to a bookshelf, looks up the history and finds a picture of the motorcycle he designed. It's farcical, but it was aired a couple of times and I just cannot recall the name. Any help would be appreciated!