The first thing is I am a big proponent in securing your weapon ON YOUR BODY....as in holstered or if its a rifle/carbine then slung on you. However, I also understand sometimes you simply need to secure guns in your vehicle. The question then is how? A few things for sure are: they dont belong in the console, glove compartment or under the seat. My recommendation is to purchase a vehicle gun safe that is 1- hidden from plain view, 2- bolted into something solid and 3- truly secure. Some examples can be found here:
Remember, it's your gun. Its your responsibility to make sure it is secure.