This past winter I purchased tires at Big O Tires and entered into this $500 free gas redemption process. The understanding was that I send in $100 in receipts each month for 20 months and receive each month a $25 gift card to the gas station of my choice. I began submitting receipts in April 2008. I received one gift card in June 2008. I have received nothing since. Although the company is responsive to my emails, there is always an excuse why the cards haven't been mailed: they haven't received them yet, they're waiting in the mailroom, apologies for the delay, etc. I'm beginning to think this is a scam or they are just counting on people to become frustrated and quit the process. The original process was to take approximately 20 months or so to complete; at this rate, we'll be using alternative fuels before it's finished. Moral of the story: Don't make a purchase based on this "rebate" process. It seems it's not really legit.