 In addition to Benny Scott, Vanguard Racing, Inc. fielded a white driver, John Mahler, in the 1972 Indianapolis 500.Vanguard's concept was to use Mahler as a development coach and a conduit for Scott's preparation for the Indianapolis 500 in subsequent years.However, many of Vanguard's stockholders were so exuberant over the Indianapolis experience with John Mahler that they lost their patience to develop Benny Scott.