I had no idea that it Lindsey Buckingham was the one who did the 'National Lampoon Vacation' song. Learning that just now gives me a very real trivia orgasm. I'm more susceptible to those things than most other people.
For some reason, the video is jarringly self-important in comparision to the film. The water, I think, is about the best case of faux-symbolism one can ever hope to find, unless I missed some elaborate joke here in my half-paying attention.