Founded in 1946, Avis was the first company offering car rental services at an airport location. After becoming Avis Budget group in 2006, this is one the largest car rental companies in the world with 4000 branch offices across the globe. GM is a minority owner, so most vehicles offered for rent are GM brand, such as Chevrolet, Pontiac and Saturn. Other popular models, like Hyundai and KIA, ...