I just received the following email from National:
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">You have made 1 qualifying rental(s) of a midsize or larger car that began on or after September 1 and completed on or before October 31, 2003, and with the one rental credit you received for supplying your e-mail address, you have earned 1 free rental day certificate(s). We will send your certificate(s) in the last two weeks of November.
There is no limit to the number of free rental days you can earn through December 18, 2003 – just keep renting from National! To make a reservation, click the button below.</font>
What a great company and deal. I had a Mitsubishi Diamante (or so) for 4 days for $ 86.00. A smaller car from Hertz using a "one day free voucher" would have been $128.00.
Very good service at DEN. Thanks National.