Never had a gun stolen from my vehicle, but sure had a bunch of them stolen from my home. Who's fault is that?
Out in our farming community all of the neighbors left their keys in their vehicles in case a neighbor broke down and had to borrow transportation. It was just a thing we all did. You cannot do that now. I see people on that nextdoor app complaining about kids coming around at night ransacking vehicles. Well dammit, don't leave the door unlocked.
I have had to do exactly that. Battery failed one evening deer hunting. Tractor in the field still had the keys in it, so drove it back to the truck for a jump and drove it back to it's exact spot in the field. Nobody does that now. Everything is locked up.
My truck always has at least 3 guns in it: a J-frame in the door, a Glock in a battle belt somewhere, and a rifle under the back seat with a go-bag. When I get in the truck the count goes up by one Glock for a total of 4. Depending on who else rides the count can go up again. If you intend to steal 'em, I suggest - for your sake - you do it when I'm not in the truck. If it gets sketchy we pass 'em out like gum and God help whoever attempts to enter the cab. I might even know of a couple of fellers who carry ear muffs in case it looks like it might get loud. God, guns, and guts, made - and keep - this country great. I'll continue to keep guns in the truck like the good Lord intended.
I definitely keep ear muffs in the center consol. Nothing says your ready for action than putting them on inside the vehicle. Fortunately, never had to but they are there when/if the time comes.
With your past occupation and your retirement range and competition, I'm so proud that you still have hearing to protect lol