I liked deviating from the the "17 mile drive" route within Pebble Beach (too many tourists on the suggested route). There are many amazing estates there.
After looking at a map, you may want to explore Carmel Valley road (county road G16, last chance to get off of the PCH before leaving Carmel going south towards Big Sur). Some offshoots from that road include "Laureles Grade" and "Cachagua Road". I've never driven them, but they look interesting!
If you have more time on your hands, I would suggest deviating to the west of Highway 17 (that runs between Los Gatos and Santa Cruz). You will see nature that is nothing short of amazing in that area!!!
I get excited just looking at the map. I hope you will oblige us with some pictures of your future explorations.
Here is a picture I took at Big Sur...must've been 8 years ago by now (click for bigger image).