I had some experience with this recently. Even in today’s modern age people still make mistakes and machines still fail. I am still getting used to my new car as well as all of the sounds and buttons that are part of the experience. So, when I left my parking lights on recently I was comforted that I am well prepared to face a dead battery. If you own a car it is imperative that you have jumper cables in your tool kit in the trunk of your car, and that you know how to use them.