I bumped into this the other day. The wife and I are looking into a new car, figured we would stop in. It appears that these are repo cars that the banks are trying to liquidate, the different dealers are just hosting. From my understanding you go down with the card that offers some kind of discount (which seems to equal around $4000-5000) off the current pay off on the vehicle that has been repo'ed. Then theres a negotiation with the bank between what ius still owed and what you are willing to pay. Theres a registration process and pre approval process if you plan to finance thru the bank.
It sounds like a good way to get a vehicle fairly inexpensively but I don't know what you would do with warranty work and as my wife said, if the people couldn't afford to keep the car, what kind of maintanance could they afford.
You'll also find that the cars have been detailed but cosmetic damage has not been repaired. The Grand Cherokees we looked semed very nice, one had a split rear bumper cover, the other had a broken grill. A newer Ford Explorer was missing some trim pieces down the flank of the vehicle.
