1967
Clark Gas Stations - Minneapolis/St. Paul, Minnesota
This is the same type of promotion that was used in the Chicago, Illinois area in March of 1967. See reply #73 on page 5 of this thread.
"Clark underprices all Twin City Chevy Dealers on '67 Camaros (we give them away)"
"Every week, until May 28th, Clark will give away a brand-new Chevrolet Camaro in this area only."
"Clark Super Camaro drawing"
"6 Chevrolet Camaros"
"Here are the winners"
"Clark underprice all Twin City Chevy dealers on '67 Camaros for six more weeks!"