That movie certainly ranks as one of the funniest movies of all time.
There's a guy in this area who has a great replica build of the Family Truckster station wagon from Vacation. His car is always one of the most popular ones when it shows up at a cruise. I'm sure this Planes,Trains and Automobile replica would be an equally big hit at shows and cruises.
The wagon would be a heck of a lot more comfortable to drive though!