SFO
Avis preferred
Booked: E (full size), then upgraded to Premium
Received: Chevy Travse

They first offered Hyundai Sonata and Crown Vic, but I turned them down and they ran out of Premium cars, so they let me choose between Chevy or Kia or Ford Escape. I should have chosen Ford Escape, but the Chevy is a good car - the only draw back is the fuel consumption.