At the front of every traffic jam is usually one of these Subaru Outback Wagon looking things.  I often find myself stuck in highway traffic going 35 mph in the middle of a the day in Seattle and I usually end up merging properly and eventually getting to the front of the line and I see one of these.  Heck, look at the picture this guy was driving along perfectly fine and then he just stopped at the side of the road.  He must have seen a rainbow or a granola tree…  actually this picture was probably taken in Portland because in Seattle they wouldn’t get off the road before they just stopped.