As I mentioned in my original post, I am not talking about leaving a gun in my vehicle 24/7. Even though I park my truck (Ford Expedition) in a locked garage at night, I don't leave valuables in it...I bring them in the house.
During the course of the day, while I or we are out and about running errands, going to dinner, etc, there are many occasions when I have to leave my gun in the car. For example, my wife is disabled, and has to go to frequent doctor's appointments, physical therapy, etc, and you cannot legally carry a gun in a hospital. Since I have an Expedition, there is no trunk...but I am thinking about either a console safe, or a lock box that I can put under a seat, chained to the seat support post. When we stop, I could transfer the gun from "accessible" to the locked storage. Then, when we get back to the car, I could move the gun back to "accessible."
I had actually given some thought to a Taurus, something like a PT111, but I don't have any confidence in Taurus products in general...I want to have the most reliable gun I can in case I need it. Maybe I am wanting to have my cake and eat it too, in that I don't want to risk losing one of my "better" guns...but I want to have the best gun I own if the time ever comes to actually use it. I would hate to have ANY gun stolen, because I just can't abide a thief in general, but to lose a gun to a thief is beyond offensive! I could live with losing a good gun to the police if I had to use it to defend myself or my wife...I'd rather be alive and minus one gun, than dead with great guns to leave to my heirs.
Still, what is that optimal truck gun? That is what I am puzzling over.