Portland International Raceway, Portland, OR September 2-3, 2017 Chip Starr driving Ralph Sbarsky’s 1961 Autin-Healey Sprite Lenham GT.Photo: Jeff Mach Martin Lauber’s 1971 Titan Mk6 Formula Ford being chased through Turn 12.Photo: Jeff Mach Tom Cantrell in his 1969 Ford Can-Am in Turn 1.Photo: Jeff Mach Greg Heacock driving his Le Mans-veteran 1967 Costin Nathan GT.Photo: Jeff Mach