Chitty Chitty Bang Bang is only a book.
Chitty Chitty Bang Bang is a 1968 British musical adventure fantasy film directed by Ken Hughes and written by Roald Dahl and Hughes , loosely based on Ian Fleming 's 1964 novel Chitty-Chitty-Bang-Bang : The Magical Car . Irwin Kostal supervised and conducted the music , while the musical numbers , written by Richard M. and Robert B. Sherman of Mary Poppins , were staged by Marc Breaux and Dee Dee Wood .