I ordered a lockable pistol safe from Center of Mass and installed it in my SUV. You can see in the pics that I have a sliding rear floor with a storage compartment underneath. I bolted it to the bottom of the storage compartment. When the floor is slid closed, its completely out of sight. The compartment floor is plastic, so its not fail-safe but its the best out of sight place to put it. And if someone does get in and happen to find it, it will take them a while to get it out, if they even try. I only use it if I am going in somewhere that I can't be armed. Its way better than just dropping it in the glovebox.