It's a 0.6-mile ride back to the entrance kiosk. I pass a lone car at one camp site, but it's leaving. Mid Hills campground is otherwise empty, which pleases me since I come to Mojave National Preserve seeking solitude, not other campers.
Everyone except me is apparently going back to work tomorrow after the long Memorial Day weekend. Perfect timing! I deposit $60 at the kiosk to cover five nights of camping, in the hope of the campground mostly to myself during the week.