That's a good way to keep the inside of the bus quiet and the kids from having to breath cigarette smoke
Nowadays, you have many more people around who listen to the Devil's voice in their ear, advising them to play Chicken
I love visiting Paradise at Mt. Rainier. It's an amazing place. The Inn is fantastic as well and still looks pretty much the same all of these years later. Main difference is the modern automobiles.
Saw this one over the weekend at a car show. http://www.stationwagonforums.com/forums/threads/packwood-summer-rod-run.49207/