SEATTLE, WA - This weekend might qualify as a Trafficpocalypse or Carmageddon around Puget Sound. A confluence of special events and summer road construction projects might make this weekend especially tough for driving around Puget Sound. There are big events this weekend in Tacoma and Seattle, which will likely only exacerbate notorious choke points. Add some construction slowdowns to the mix, and it's enough to make you want to stay home (or take light rail).