Continuity mistake: The Google Earth Streetview route shown through downtown Chicago (I-94/90) is not part of the computer-plotted route from O'Hare Airport to Ishpeming which they used. It would have been a long detour from the suggested path laid out for them. (00:34:30)
Continuity mistake: In electric avenue scene, the number of wood bars the cast has to go around changes from two to four.