Can you drive to the primitive camping sites, unload and then park? How does the no car policy work?

The hike in primitive requires you to park in the parking lot and carry your gear to the site. The drive back to the sites is hilly so take a couple wagons to haul your gear if you don't want to make several trips. The primitive group camp sites are in my opinion the much better option. You can take your vehicles to the site and they are much larger sites.

There are parking lots to the different hikes

I parked in the lot and walked the park.

We spent the day but did not camp over night.

We always parked and walked in.

Best to call park office and confirm