Goof

I haven't seen this movie in a few years, but I do remember a scene in which an elderly couple is discussing how nervous they are to be flying. The woman proceeds to tell her husband something along the lines of "I remember you were this nervous when you were coming to meet my parents for the first time. You were shaking on the train ride all the way from St. Louis to Sioux Falls." This is an error in geography because Sioux Falls doesn't have, nor has it ever had, an Amtrak or any other long distance passenger train service. The only one Sioux Falls has had was a trolley service in the late 1800s.

Oh well, Sioux Falls doesn't get mentioned for anything. I guess an erroneous statement in an early-80s movie will suffice.