Jay Leno and appraiser Donald Osborne dedicate this episode of Assess and Caress to a celebration of American Racing Classics. The three purpose-built race cars from the Audrain Museum in Newport, Rhode Island , reveal the wildly inventive personalities that defined American motorsport: a 1959 Old Yeller II , a 1955 Curtiss Craft Sprint Car , and a 1963 Shelby King Cobra.