I solved the morning cold in a tent by having a small stove and coffee pot going before crawling out, and yes spent more than few nights in a p/u cab. Then there was the night a quick blizzard came in and I spent the night next to a fallen tree with a small fire going. That one got me a mite grumpy

Remember why, specifically, the Bill of Rights was written...remember its purpose.
It was written to limit the power of government over the individual