You can use an all-weather vehicle cover if you don't have a garage to store your car for that time. Wash and wax your vehicle before keeping it in storage. Ensure you fill up your gas tank, and you can also pour a chemical fuel stabilizer into the tank of fuel if you intend to keep your vehicle for more than a month. In addition, get a battery tender to prevent you from having to jump-start your battery when you want to use the car.