The first half of the movie is set in Princeton, West Orange, and Bayonne, NJ. Both Bayonne and West Orange are within 40-50 miles away from Princton, making traveling on bikes very difficult.
Indy's girlfriend and Edward Stratemeyer's daughter is named Nancy, presumably an homage to Stratemeyer's Nancy Drew. Historically, Stratemeyer's two daughters were named Harriet and Edna.