Thanks for sharing your pictures! It looks like a lot of fun and is definitely getting me excited about doing the exact same trip in September.
What were those loooong lines of cars about? My g/f doesn't like lane sharing either (not that it's even legal in Oregon).
The lines of cars were because of road closures for construction. All over the place, it was ... annoying. Only once was the shoulder wide enough, and it was hot enough that the Lovely Wife was comfortable cheating to the front. Normally it's the thing to do since you have a clear road ahead of you to ride at a "fun" pace with no cars in the corners to slow you down.