he fourth season of Knight Rider, an American television series, began September 20, 1985, and ended on April 4, 1986. It aired on NBC. The region 1 DVD was released on April 4, 2006.
Interest in the show declined, leading to its cancellation by the end of the season. Hasselhoff, knowing the show was coming to an end, attempted to make a "series finale" and helped conceive the story "The Scent of Roses" with his wife at the time Catherine Hickland, who played Michael's love interest Stephanie "Stevie" Mason in past episodes. The network instead aired "Voodoo Knight" as the final episode. A new street-smart mechanic, played by Peter Parros, was added to the cast in addition to Bonnie. Of all KITT's features added in fourth season the most important of them is "Super Pursuit Mode". KITT could also convert into an open convertible.Overview from themoviedb.org