I drive the 520 every morning and I've been seeing the test signs lately. Got me thinking how my commute will change as a result. It's still a ways off (tolling starts in Spring of 2011) and the cost hasn't been established yet, but every figure I've seen thrown out there has been pretty high in my mind. I imagine 90 will get a lot busier and maybe the decrease in traffic on 520 will make it easier to stomach the cost, but I think it will be interesting to see what type of effect this has on the entire area. What will you do when the tolls hit?