I would assume that since they are losing 3% or so for credit card fees, they don't want to lose that much.
I really cannot see me buying a new car, the instant depreciation leads to car depression.
I am the worst at selling cars, 2 have been stolen, 2 have been sold for scrap value, and I donated 2, so when it was time to sell my latest one, took it to CarMax, left with $1200. I bought the same car from that same CarMax 10 years earlier for $20k. I do drive them to death, but I shovel money into them until the repairs are more than the value, then it is time to find a new one. I dropped probably $2500 this year on that car for 10 months of driving it after saying it was time for a new one (it was a 2000 model). I hope some kid gets a really good used car, as I had just fixed it again before selling it.
As far as buying, my brother's buddy works for a dealer and goes to auto auctions 2x a week, so I told him what I was looking for and when I got home from a Vegas trip in Sept, my new (used) car was sitting in my driveway. I liked this method for ease, but I feel like I missed the joy of saying "I'll take that one". But hey, I got a 2011 with only 30k, so not complaining too much.
Except for the pin stripe.

But I can live with it for the next 10 years (hopefully).
BiGGyT