The pepper spray is a good idea, as it comes in handy for all kinds of non-lethal confrontations. I worked at a gas/convenience store, and it was my first bline of defense.
I am a scrap recycler on a very small scale. The inside of my car generally has tools and pieces of scrap that can be used as bludgeons while not being classified as weapons. Of course, if you drive an immaculate car, this will not work.
If you can't solve the problem with six shots, you probably can't solve the problem. - Jeff Cooper