I get upgraded to something better about 75% of the time. It seems they always want to put me in a Malibu, but I just ask for something different and usually score a Century or Regal. The last Regal I got had the navigation system. It was really handy! The best treatment was in San Antonio, they had the car doors-trunk open, the car was running with the a/c on, and a Wall Street Journal in the pax seat. The agent was waiting for me by the car and shut the door for me as she wished me a "good day".