Riding in my little google maps car using street view it sure looks desolate out there.
I wonder which remote road his car was found on? MOO I can't picture a carjacking to end up there, unless the person doing it lived in the area and knew where to ditch the car and could walk on home from there or something.
Looking around the area I did see a hunt club (looks like for pheasants) "Castle Rock Upland Sporting"
Castle Rock Upland Sporting is located halfway between Coalville, Utah and Evanston, Wyoming along 1-80.
www.castlerockuplandsporting.com
Their season runs September through March, so not now in season, but I have no gun knowledge so I don't know if he would have used his gun for something like that anyway?
There's also another something I'm not sure about - "Deseret Land & Livestock" (also Deseret Land & Livestock Trek Mission) which maybe someone could explain. It comes up with the Church of Jesus Christ of Latter Day Saints and has info on "treks":
Information on scheduling, itinerary, and activities at Deseret Land and Livestock.
www.churchofjesuschrist.org