Leto

I haven't fully read through, but I had to add this before I forgot:

In the original Vacation, the family is driving along, and the scene is one of domestic bliss, as the camera pans around the car and each member of the Girswalds is peacefully sleeping. The camera finally ends up on Clark, the driver, who is also peacefully slumbering away. Then the car crashes through the hiway barrier and comes to a crashing halt.

As the family awakens, Chevy Chase delivers a line in his classic deadpan. Something along the lines of "We're here".

pure comedic genious.