No, Dollar and Avis are not the same company. Dollar is a car rental company owned by The Hertz Corporation that offers its services in more than 90 countries across the world. It was founded in 1965 and provides a wide range of vehicles to customers including economy, luxury, sports cars and vans. On the other hand, Avis is an American car rental company with operations all over the world. It was founded in 1946 as a single-car operation in Detroit Michigan and now serves more than 5500 locations around the globe with over 300000 cars available for rent. Both companies offer similar services like airport pickup/drop offs, one way rentals etc., but they have different ownership and distinct branding strategies which makes them separate entities rather than being merged into one single business entity.