The coast highway is great, altho one time we had to take the 101 highway, inland, as there was a rockfall blocking 36 miles. If you drive, go LA to San Fran. Going south you might fall off the highway!! No fences and big drop down the cliff. Beautiful scenery along the road.
Don't miss San Simeon and the Hearst Castle. The motels right on the beach are gorgeous.`
Carmel and Monterey are beautiful, the 17 mile drive (with the seals etc) is at Carmel.
San Fran is wonderful and exciting and beautiful. Not 2b missed. Go over the bridge to Marin County, very relaxed, and wine country if u like.
San Jose has the Winchester Mystery House, well worth 2 hours. Check it on line.