I recently made roundtrip from Fair field on I80 next to Sacramento to Bodega Bay by going 80 to 37 to 101 and then onto to 20 if I was going to Bragg. One time I went via hwy 12 from 80 and it was a near nightmare of screw ball intersections, small towns, heavy truck traffic, many stop signs and stop lights, and changing hwy numbers. Never again unless I want to visit wine country. Cheers