Maybe Boeing's move to Chicago will serve as a wake-up call to our legislators in Olympia who refuse to move forward on any type of meaningful transportation program. The fact is, the state of ground transportation in the Seattle area is deplorable. Boeing was probably just firing a warning shot, saying that something needs to be done to the transportation infrastructure if the Seattle metro area wants to attract and keep high profile, high paying employers.
There is no "good time" to get anywhere via ground transportation in the metro area. Traffic starts backing up on I-5 before 6 AM. After a brief lull in the mid to late morning it starts going bumper to bumper again until 6 or 7 PM. If you work in the metro area and have to commute to the 'burbs, you can count on at least a 3 hour commute each day.