All women need to know how to change a tire. Not all men who stop to help are nice, some are predators. I have a system that I've informed all my friends and family of. If I am stranded and can't fix the car myself I will not stay with the car and be a target for anyone that comes along. If there are woods near by I will stay just inside the tree line. I will always be within ear shot of a car horn and everyone that knows me knows what I would do. All they need to do is find my car(fairly easy to do since someone always knows where I am) and honk the horn and wait for me. A woman in distress is an easy mark for a predator.