By necessity, Seattleites are passionate about transportation. There are so many cool places within driving range, but it is essential to know how and when to get there to avoid sitting in traffic. Firstly, never drive south into downtown in the afternoon. Second, follow the Seattle Transit Blog. And last but not least, follow the WSDOT advice and take a vacation for the month of August.
From that same SeaTrans blog, check out this photo of light rail tunnel boring.