I wouldn't do a Kayak rental again
Cons: Fortunately, a day before we left, I noticed that the pick up and return were not what I had specified in making the rental. Rather than being at the airport, they were at some other location in the D.C. area. When I called to change, I found out that there would be an additional charge and then the computer system shut down so I was told to call back. I went to Avis on line and was told that the reservation number was not associated with my name. I called again and cancelled. When I received the cancellation, it had the correct number, but was for some location in PA. I then used my Avis preferred number and made a reservation. Although $30 more than my original reservation, it was uneventful. I will never use a KAYAK arranged rental again!!