I live in Mississippi, and the law states that your VEHICLE is an extention of your home, thus you can carry in your vehicle without a permit. WITH a permit, you can carry virtually anywhere unless it is otherwise stated (bars, casinos, etc)
I was discussing SYG laws with someone in another location and it struck me as odd that in my state you can use a firearm in self defense no matter where you're at or if you have a permit, but if you need a permit to carry. Kinda strange in my opinion lol