A lot of people have a more ignorant outlook. In the winter I always keep some water, body warmers, salt, blanket, and some other basic supplies(utility knife, lighter, whistle, flashlight, etc) in the trunk of my car because a group of friend and I tend to go hiking in the back country a lot with little to no cell service and sometimes it can snow out of nowhere. This is some basic covering your own ass stuff, but I'm look at like I'm crazy. If the car gets breaks down or it starts snowing when we're a few hours out and come back to a snowed in car or icy steep roads, I'd rather have everything I need to either hang in the car and wait it out until the next day or make a few mile hike to a house we saw down the mountain or access road.