Robert Borden’s ’71 Porsche 911S leads George Calfo’s ’70 Porsche 911S and Robert Bitterman’s ’70 Datsun 240Z into Road Atlanta’s scenic Turn 5. Photo: Chuck AndersenIt’s F5000 vs F2, as Barry Blackmore’s 1975 Lola T332 leads Earl Roberts’ 1972 GRD 372/3. Photo: Chuck AndersenThis orange Jégermeister-liveried beauty is Mike Smith’s 1979 Porsche 935 K3. Photo: Chuck AndersenHuge field of GT category cars lines up to take the green flag for the start of the Bob Woodman Tires International/America Challenge. Photo: Michael Casey-DiPleco
