WHERE AND WHAT
I think it was something from 8 to 6 hours drive, we did it from SF to LA. I still want to do it again with anas, but with a mustang convertible car, hiking shoes, a weekender bag. If you decided to stop by for a day or two in the middle of the drive, Post Ranch Inn is defiantly the place to go in Big Sur.
I would definitely recommend another one day stop in Santa Barbara. Or if you want a crazy experience, you can stay at The Madonna Inn.