I drive a one ton flatbed that is loaded down with tools and it isn't really feasible to take them all inside every night. Most of them live in a weatherguard box on the back, but occasionally I have to have some in the cab. When it comes to a smash and grab I'm pretty much screwed whether there is a gun in the truck or not, so while I do worry about it, its not much of a deciding factor anymore. I do my best to not leave anything visible if I'm not going to be near the truck for any period of time but that is the best I can do.
I think your daily routine would have more to do with what gun you keep at hand, but I suppose the type of vehicle you drive also is decided by your daily routine as well. Being that I'm running around horse farms and hay farms, I'm much more likely to need to dispatch a raccoon in a haymow or evict a bunch of possums from a saddle rack, so I have settled on keeping an SR22 pistol in the truck, to go along with whatever I'm carrying that day. I will occasionally add a rifle to the loadout if I think there is a chance I will need it but for the most part its just an extra pistol in the truck.
I think your daily routine would have more to do with what gun you keep at hand, but I suppose the type of vehicle you drive also is decided by your daily routine as well. Being that I'm running around horse farms and hay farms, I'm much more likely to need to dispatch a raccoon in a haymow or evict a bunch of possums from a saddle rack, so I have settled on keeping an SR22 pistol in the truck, to go along with whatever I'm carrying that day. I will occasionally add a rifle to the loadout if I think there is a chance I will need it but for the most part its just an extra pistol in the truck.