[quote name=\'fostergray82\' post=\'236275\' date=\'Feb 21 2010, 01:15 PM\']Celebrity Sweepstakes offered a car for three-day champions. An episode at the Museum of TV and Radio has one lady winning a 1976 Chevrolet Malibu.
I think Play the Percentages offered a car as well.[/quote]
If you're counting "three and a car", Joe Garagiola's Memory Game did that.
If it's strictly five for the car, when Celebrity Sweepstakes switched to "retire after five days", I'm pretty sure they briefly changed the car rule to needing five wins, before going to "three and a car, retire after five".
(Also, I remember one early CS contestant winning two cars for winning six games.)
-- Don