I dread the day I ever break down without a phone. I have a multi charger in my car and always charge my phone up if I’m going on a long drive even if I start with decent levels. I once broke down in daylight with my phone battery dying and was in such a flap. After that I got break down cover (NOT AA!) and bought the charger. It makes me feel so much better, I would urge everyone to get one if you haven’t.
On the car subject, I had to drive alone for a few hours recently and had to stop in a lay-by. Choice was either flash to all passing cars or go further back into some trees which felt a bit scary. I have some puppy pads for absolute emergencies, haven’t had to crack them open yet!