Marty...you and scoober are a couple tough old boys! :)
I camped at 7.000 ft in the national forest, next to a rest stop, in a tent once! I had a folding cot, and light duty sleeping bag. My camping buddy slept on tent floor, with a single blanket.
We were not prepared for temps in 20s. Lol, he did fine, slept great! Me...froze my a$$ off, didn't sleep well. Crawled out before daybreak, to relieve, and noticed a MH parked in rest area. Door opened, lady hollers, "would you like to come in for a hot coffee"? OMG a miracle has just happened.
When I left those nice folks, went back to tent, buddy still sound asleep, unaware of cold, and hard ground.
Jerry