Oh, it was one of my favorite road trips ever. I recommend the pebble beach, the golden gate park, the cliff house, the Monterey bay aquarium, and so many other places. It depends though, on how long the trip will be and how much time you have on hand because there's a lot to see. My second favorite trip was to Ukraine a few years ago, with the whole family. We rented a car from https://narscars.com.ua/en/kiev-r2
and traveled the entire country in ten days. Quite crazy and tiring, but it was an amazing adventure.