The actual bus journey from Pop Century to Magic Kingdom Park is approximately 22 minutes, so I think it will be a similar journey time for Art of Animation too. Don't forget to add the time it takes to walk to the bus stop, and waiting times for the bus.
Filmed in Kipling, Saskatchewan, RUST stars L.A. Law's Corbin Bernsen, who also wrote and directed the film. The real-life citizens of Kipling were cast in supporting roles.
Some sources have given the drive-in site as the Studio Drive-In in Culver City, CA, but according to the film's director Randall Kleiser, the drive-in movie sequence in Grease (1978) was filmed at the Pickwick Drive-In (1100 W. Alameda Ave., Burbank, CA).