The C12 was introduced at the 1997 Geneva Auto Show as was one of the highlights of the show. It was considered Callaway’s crowning achievement after successfully producing almost a thousand high-performance vehicles. Because the car was built as a homologation between the American Callaway company and the German based IVM Automotive, the car was approved for sale worldwide, greenlighting the race car version for competition in the GT2 class at Le Mans.