[Too Many Projects]

Depends entirely on the vehicle. Most of what I have brought home has been projects and basket cases, nothing worth tens of thousands of dollars.

BUT, I would never stop at a motel/hotel and leave the rig and car in a lot completely out of my sight. I have an open trailer and having whatever I'm hauling in plain sight just feels like too much temptation for opportunity thieves.
As for not sleeping, that is a personal choice. I prefer to limit the exposure of what I am hauling by staying on the move. I may be wired a little different in that regard from most people. I was an owner/operator for 40 years and did long haul during the winter months when the construction trade slowed/stopped in the frozen north. As a result of the long haul years, I greatly prefer to drive at night. There is a LOT less traffic and I get thru any major metropolitan areas before morning rush traffic. When I get tired enough to sleep in daylight, I stop for a few hours.

As for carrying a weapon, I will never have one in the vehicle with me. If there is any chance of being stopped for a driving violation, or forbid, an accident and you are found with a weapon in the vehicle, especially a loaded one, the reason you were stopped or crashed becomes secondary to the loaded weapon charge. If you only stay in your state and have a permit, shouldn't be a big deal, but carrying a loaded weapon across state lines becomes a REALLY big deal and your rig and whatever is on/in it is confiscated and impounded. The LEO's then become the thieves.