Rental car companies would buy directly from the manufacture, or fleet deals as they call it. There is such a demand from dealers for inventory that it will be years and years, if ever, fleet deals become a thing again. Now rental car companies are having to buy at dealer auctions and they are paying the moon ++++ for their cars. They're so desperate that I get calls daily from them asking me to sell them inventory. Uh, that's a hard no. Their remarketing departments are now losing money vs making money. Hertz, Avis, and Enterprise are the ones currently driving used car prices to insane levels. I watch it every day and laugh.