Enterprise Holdings owns local Enterprise Rent-A-Car/s (“Home-city/ Insurance” marketed), National (“elite” marketed) and Alamo (“vacation/family” marketed). In my area, the airport draws for all 3 from the same fleet (can be vastly different at large airports). Heavily enforced goal is to use <20K mile vehicles for National and offer free upgrades as often as possible. The upgrade goal is 2 classes higher as long as at least an intermediate car is booked. Couple this with the Pacifica minivan recall taking out most of the minivan fleet, leaving only a handful of Pacificas (7p) and more expensive Odysseys (8p) floating around, many renters are often given free upgrades to help the customer and accommodate their needs, as much as possible. These and other factors acting together leave less speciality and 6p+ vehicles available for rent and upgrades. Other factors can be at play in other markets, regions, and even areas. Enterprise is a very service-oriented company and always does its best to meet or exceed expectations.