I once met a guy for some sales calls in the Bay area and every time I talked to him, he stressed we could only travel between 10:00 and 2:00. Outside of that, traffic would be SO bad, we wouldn't make the appointments. He built it up to the point that I felt there was no way it could be that bad. It was TWO TIMES worse!
Reading the previous posts and the local knowledge, it is advisable to fly into Sacramento and stay north of S.F? Or are those roads going to be a parking lot also?