Pacific Coast Highway Road Trip - I did this trip (highway 101), in 1999, with a slight variation on stops, and 2 overnights. Best done starting in SF, rather than SD, for the views of the coast, cliffs, beaches etc. if you have a convertible this would be even more amazing.
Easter Island is one of the most remote, inhabited islands in the world, located in the middle of the Pacific Ocean, more than 2,000 miles off the coast of South America. The island is famous for it these giant stone heads (called "moai"), carved by the indigenous Rapa Nui people more than 500 years ago.