I love Prothro's contributions to UA but there's no way in hell I'm buying a car from his employer, Drive Time Car Sales. (FWIW, those positions are not commission based.)
It's a secondary lender with Interest rates that go up into the high 20's (even though they'll advertise rates lower.) It's not a lot different than a place like Rent-A-Center. The chances a customer gets a car that's already been sold, repossessed, and then re-sold ... pretty damn high.