Good people and a sky full of stars
Jana and Tim are good people. When I left the next morning, I felt like I was leaving something important behind, and I think it was them.
I arrived right at sunset, Tim met me and showed me around, and we picked a spot for me to set up my car tent rig -- I'm normally in a class C RV, and Tim was completely understanding of my uncertainties and helped me come up with two or three contingencies, including an offer of an enclosed structure if all else failed. Jana came out later to say hi and to make sure everything was okay; good conversations in both cases.
Google maps worked perfectly for me for finding the place -- I used the address, didn't try the GPS coordinates.
If anyone else is crazy enough to try this in a little EV sedan, this worked well with no ground clearance issues, even with the six miles of county dirt roads -- at least at this time of the year, it was well-maintained; I even passed a road grader on the way out. Tim helped me pick a spot where there was 120V in reach just in case, but I didn't need to plug in; had left Cheyenne at 100%, only used 12% overnight, arrived in Sidney at 46%, plenty of leeway (Tesla model 3 in my case).
I had to get on my way early the next morning so didn't get a chance to explore the property; wished I could have. Overall a very good experience, and I feel like that's an understatement. I would definitely stay here again.