The top mistakes in National Lampoon's Christmas Vacation http://www.moviemistakes.com/film875 en Sat, 19 Jul 2008 05:55:07 +0000 5361 At one point when Clark is flying down the hill through snow drifts on his saucer sled after greasing it up you can see the guide wire pulling the sled. 5363 In an early shot of the outside of the house, the motorhome that Eddie and family show up in is parked in the driveway. The problem is, they don't appear until much later in the film. 5364 When the Griswold's are driving to the tree farm, they are being harassed by the rednecks in the truck.  Several shots of the front of the truck show only two passengers, but one view of the truck through its rear window shows three passengers. 10653 When Clark is sliding down the hill on the sled, several times you can see fins on the bottom of the sled to help whoever was riding the sled control the direction a little better. When Clark is rubbing the oil on the bottom of the sled before he starts the sled is completely flat on the bottom. 10655 When the Santa Sleigh is launched in the air by the ignited sewage, the sleigh flies over the moon. Now on the DVD version of the film, it's not clearly visible, but on the VHS version, you can clearly see there's a box around the sleigh that looks like the sleigh is under a microscope slide.