If that's the New Orleans episode....seriously fun stuff...although I was shocked the Cadillac was not able to be given away for free!!
I'd say any used car with a good reputation - consumer reports are always a plus or buying grandma's old Grand Marquis is the plausible option.
Hyundai and Kia used to be a joke but look at them today! If you hit the sale just right you could nab an Accent or similar sedan for under 10K ...and who cares if it breaks down every 3000 miles...I have a 10 year warranty!