In case of an emergency what do you need in you car?

in case of an emergancy the things you should keep in your car are as following: 1, first aid kit in case anyone gets injured 2, a fire blanket in case your car sontainiasly combusts 3, a knife in case in a crash you can cut the seat belt if it gets jammed 3, a spare tire in case one goes flat 4, a jack (not a person named jack, a metal one that hels you lift your car up(superman!!!!) in case you need to put a spare tire on