You never know when something might happen so it pays to be prepared.
I have my car all packed up in case of an emergency.
In my boot I have a 3L container of water, a change of clothes for John, myself and Mr Ecochick, a towel, some disposable nappies and wipes (cringe), jumper leads, reflective triangle, some large plastic bags, some toilet paper, a blanket, a thermal bag with some protein shakes, crackers and other snacks in it.
In my glove box I have a first aid kit with lavender and tea tree oil, a spare set of glasses, a torch, disinfectant, wipes and an old cell phone (that can make 111 calls).
Do you have anything in your car?