We are planning a road trip on Hwy 1 from San Deigo to San Francisco in May 2010, and when researching it, we found a post from someone who did that trip and said the traffic was bumper to bumper the whole way. That is really off-putting as this is once in a lifetime thing for us and want to do it at the best time. What suggestions do you have? We would really appreciate your advise. Thanks!