everyone in my area knows me, they know I always have a gun in my truck, 2 things keep the locals from getting sticky fingers.....fear and common sense, one day a stranger may relieve me of one, if so he better pray I don't find out who he is!
RR

I have a lock box in my truck bed for my rifles and I have a lock box welded to the floorboard under my seat for my handgun. I also have a lock box welded to the floorboard in my Audi. It's rare that I visit anywhere other than a courthouse that doesn't allow my CCW and like Oldtimr, I secure mine in the lockers there. But it is nice to be prepared to be able to lock mine up if I am in that situation where I must leave it in my vehicle. I'm screwed if I'm on my Harley though.

I generally try to find a place under my fairings or in my bags and run a cable lock around the frame (leave it there permanently), then just lock through the pistol if I leave my bike. Not easy on some bikes, really easy on others. I added a box under the fairings on one of my Daytona's in the cockpit, then converted a cowling from fixed into a hinged lid.

Quite often, however, I remind myself to be practical about things. A bike lock or pistol cable lock around a seat frame is quick and easy. I have owned "truck vault" type boxes and have bolted in other pistol safes... I carry relatively cheap pistols - adding a $500 set up to secure a $250 LCP doesn't make a lot of sense. And a lot of safes which could be incorporated into a vehicle really aren't any more secure than a cable or coated chain lock. I saw a demo once where a guy used a crowbar to rip the bolts through the sidewall of a very popular vehicle handgun safe model in a matter of about 2-3min, which is about as fast as I've seen someone with bolt cutters take out a thick cable lock. If someone wants to steal from you, they will. Spending hundreds or thousands of dollars to secure a low cost pistol doesn't make a lot of sense. I'd be pi$$ed about losing any of them, just like I was pi$$ed when someone stole my phone charger and binoculars out of my truck 2yrs ago, but if someone broke into my truck, cut a cable lock or jimmied one of my gunvaults and stole my $800 Sig, I wouldn't put a $500 safe into my truck. I'd put the same cable lock back on it, and let the theft protection of my insurance buy me a new pistol, and put the same $100 cable lock or same $300ish safe back in place.

I'll follow that by specifying - I have NO qualms about what happens with my firearm after it is stolen. If I make reasonable effort to secure the firearm, but a well-equipped thief is able to take it, what happens with it thereafter is not on my conscience. If a thief really wanted my gun, he could ambush me with a gun drawn when I exit my vehicle and demand I hand it over to them... I'm not losing any sleep over what they do with it later - remember, any criminal who hasn't been caught at least once can buy a gun from any licensed firearms seller, with NO registration of any kind in most states. I don't blame objects for the actions of people.

While my rifle box in my truck was fairly expensive, the little pistol box that I welded myself under the seat was pretty cheap and it would take a pretty fair bit of work to get it not to mention it's fairly well hidden too. Like you I'm not all that worried about the cost of the firearm but unlike you I do worry what would happen if someone did get their hands on one of them. I know it's stupid to worry about such things but I would be constantly asking myself if I could have done something more to secure it. I guess I'm one of those people that takes on guilt where I shouldn't. And from what I've been told, the paperwork for a lost or stolen firearm, especially for a person in my line of work, would be dang near endless.