If you are planning on driving this winter you should never leave home without a bag of sand, salt, or litter in your vehicle. You don't want to get stuck and have nothing to help you out. If you have sand, litter, or salt to throw around your tires, you just may have enough traction to get out of a bad situation.
Sand is a good choice because it is cheap and salt will work, but it can cause your car to rust. If you do use salt be sure to give your car wash as soon as possible…
