Hmm, I think that's a specious argument for not riding it. Sure traffic is heavy getting the through SF and the stretch to Half Moon Bay isn't the best, but after HMB, CA 1 is a gas. There is one side road to consider taking as well that takes you through the Gazos Creek area and off 1 for a bit. The tail wind to Santa Cruz is to die for (well almost). Getting through Santa Cruz is a little testing with a lot of twist and turns and traffic. South to Monterey isn't too bad, and after Monterey you're rewarded with Big Sur. I've lived in the Bay Area for most of my adult life and have ridden south from HMB at least once a year during the last 20 years to as far as SLO. I just don't see traffic in that area being any worse than any day in Lincoln, OR. A trip down the Pacific Coast isn't complete without the Big Sur stretch. Stopping in SLO makes more sense from that standpoint.
Santa Rosa, CA