I made a reservation through CarRentals.com for a one-day rental in Ft. Lauderdale, FL for 12/27/08. The reservation was with U-Save, a company I had never heard of and now I know why. I was very unhappy with U-Save this weekend. When I called the company to send a shuttle over to pick up my reservation at the Ft. Lauderale airport, I was told there were no cars available. I explained that I had a reservation and the representative was very rude and unprofessional. I explained that I had a reservation and he said that was too bad, that he didn't have any cars. I again explained that I had a RESERVATION and he just said I was out of luck. That there were no cars available. It felt to me like that episode of Seinfeld, where Jerry tries to pick up a car and they tell him they don't have any cars. He is told that they have the reservation, but they don't have the car. He explains that the purpose of the reservation is to hold a car.
Sure, I saved - I ended up with no car! I would recommend avoiding this company if you need a car when you arrive.