I am curious about something though, really this isn't meant as anti gun or what ever, just curious about the mindset.
Do you have those many weapons in your car because you feel they are like additional safety or do you really feel very unwell without them?
I don't consider a pistol, a back-up derringer, and a shotgun to be "many weapons" for starters and I have them for the same reason I have a fire extinguisher, a first aid kit, jumper cables, and a spare tire. In case of a situation that requires those tools.
Also, if you move with your car around, how do you deal with areas where for example guns aren't allowed in your car? As far as I know some parts of the US can be very strict here, not that I am an expert around gun laws in the US.