The script was originally written in 1935 by Endre Bohem, but sat on the shelf until 1990, when his son Leslie Bohem found it upon his father's death. He fell in love with the script and, after updating it for the 90's, sought to have it finally filmed.
The 3rd of three movies starring both Elisabeth Shue and Christopher Lloyd. The first two being, of course, Back to the Future II and Back to the Future III. (Elisabeth Shue wasn't in the original Back to the Future.)