We are completing a 3 week Utah/Arizona trip of a lifetime. Tomorrow we leave Sedona, headed to LV to return car and catch 6 pm flight home. We drove down to Sedona from Flagstaff on 89A. Traffic was very slow and bumper to bumper. Would we be better off taking a different route to I-40? Using the Maps app I see a route, which is the other half of 89A, going through Chino Valley. Thoughts?