A full field of classic GT cars and competitors moved the 46th Historic Sportscar Racing (HSR) Mitty off to a fast start Friday at Michelin Raceway Road Atlanta. The overall and Porsche-class winner was regular HSR victory lane visitor Todd Treffer,t who topped the 40-plus car field with another victory in his 901 Shop 1972 No. 14 Porsche 911 IROC. Steve Cullman put in a competitive drive to third overall and second in the American class in his 1970 No. 74 Ford