If you're out fishing, hunting, or camping, a decent knife is a good thing to have on hand. If you haven't honed the blade in a while, you can do it along the top edge of your vehicle's window.
With luck, you'll never be trapped in a car with the need to break the window from the inside, but if you are, and you don't have the right tools, your salvation may be right behind your head. Here's how to use your car seat's headrest to break your car door window.
Some of us keep absolutely nothing in our car trunks, while others have enough packed to live in their cars for weeks. Somewhere in between is this list of thirty things we think every car owner should always have on hand.