Drivers in and around Seattle have a reputation for being notoriously polite. Pedestrians get the right of way, people use turn signals when changing lanes, and the "thank you wave" is a way of life.
But, not everyone who lives here thinks so highly of their fellow motorists. So, with a bit of a chuckle, I give you:
Driver's Etiquette for Seattle (http://www.oz.net/~susana/drive.htm)