Perhaps the context is that the rental car companies are the handmaidens to the manufacturers. They handle the surplus. In recent months, I've been regularly offered the largest SUVs (no Hummers) when I turn up for my economy car. "We have a Road Dominator available immediately." "What about the economy...?" "Well, that could take 15 minutes, maybe more..."
I think they're desperate to cycle the big ones through.