Rent-a-car option Avis is a car rental company founded in 1946 by Warren Avis. It is the second largest car rental company in the world, with over 5, 500 locations in 165 countries. Avis offers customers a variety of rental options, including short-term and long-term rentals, as well as one-way rentals. Customers can also choose from a wide selection of vehicles, including luxury cars, SUVs, minivans, and more. Avis is a great option for those looking for a convenient and affordable way to rent a car.