We came here on a Sunday evening with the intent of getting out of the 35 knot coastal winds and decided upon making camp at a pullout under a tree about a mile from Highway 1. However, my Prius C made it two miles in before we chose to turn around. The road is pretty well maintained if bumpy at times but we just took it slow on the way up and down.
Highly recommend downloading offline maps before you lose signal around San Simeon (south hwy 1) and carmel (north hwy 1). My boyfriend has AT&T and I had T-Mobile and neither of us had signal.
It was dispersed camping and pullouts as far as we got up the road. We set up our tent next to the mighty Prius C and enjoyed a gorgeous sunset, stars, and some beautiful morning views. It was pretty windy at night but it calmed in the morning. We did not see a single soul on our way in but come Monday morning, three cars had drove past our site (I assume they made it much farther in).