I just posted this on the Budget Board, but I figured it would be good to post it here, too. I just saved $200+ on my car rental for September using my Capital One No Hassle Rewards card online account. I didn't even know you could book travel through there- maybe it's new? Anyway, no cancellation fee, cheaper than Hotwire, Travelocity, Costco, and CarRentalSavers, at least for our dates. Got a week in September (MCO) with an intermediate size car for $179.84 total. The cheapest I have been able to find so far is $250+ for a compact!! Since there's no booking fee, I went ahead and booked it, and will keep looking for a lower price, but holy cow, that's not a bad price to start with! I didn't use any rewards points on the rental- just a regular old credit card (and not even my Capital One!). I follow the Million Miles Secrets guy- here is his post on how to do it online. http://millionmilesecrets.com/2013/01/29/capital-one-car-rentals/ I gotta tell you, I was super excited to find that this even exists!! Hope this helps someone!!!! 7/17/13 UPDATE!!! I just re-checked, and prices have come down to $128 for a week from Thrifty and Dollar. But, it was only if I reserved at 9:30am instead of 10am.... weird!! HOPE THIS HELPS SOMEONE!!