Time to hit the Holiday Road.
http://www.youtube.com/watch?v=rjHqERGApv4
side note:
The Vacation crew asked Disney if they can use one of thier parks for the movie. Disney basicly said, heck no. so they went to six flags who said, heck yes. but the final cut used traveling mats for the front and entrance and parking lot. and filmed inside on certain rides.