Trying to rent a car for a week out of SFO for a business trip. My default CDP is AAA and with that only SUV and Minivan are available. With US Airways CDP only Minivan is available.

But if I use United Airlines CDP (link from my ticket purchase) then I can choose from Intermediate, Full Size, Prius, SUV, Navigator, Corvette, etc, etc... This is with the same dates, same airport, same pickup and drop off times.