Originally Posted by duc1986d

Thank you so much, it works and it is the best tip ever
One think is that they want you to pay at least 1,000 AA miles. Now I can see how precious AA miles can be. You just save me more than $100 and that is why I love Flyertalk so much. It would be even more awesome if you can cancel the car rental and get money back in miles

Here is the term I talk about
All AAdvantageŽ members are welcome to participate, but a minimum of 1,000 AAdvantage miles and a credit card with a United States, Canada or U.S.V.I mailing address is required for each purchase. AAdvantage car & hotel awards are available as mileage-only awards or as a combination of AAdvantage miles plus cash, which allow you to use fewer AAdvantage miles by making up the difference in cash. Your AAdvantage miles will be deducted at the time of purchase. If you choose to pay for your purchase with AAdvantage miles plus currency, you'll also pay any currency due at that time with a major credit card.