AVIS RIVAL is a term used to describe the three main car rental companies that compete with each other for customers. The three companies are ALAMO, Hertz, and DOLLAR. ALAMO is an American car rental company that was founded in 1974 and is now owned by Enterprise Holdings. Hertz is an American car rental company that was founded in 1918 and is now owned by Hertz Global Holdings. DOLLAR is an American car rental company that was founded in 1965 and is now owned by Hertz Global Holdings. All three companies offer competitive rates and services to their customers.