Bobby Unser drove the “Norton Spirit” Penske-Cosworth to victory in both races of the Trenton Twin Indy at Trenton Speedway in Trenton, New Jersey, US


Sunday 10th June 1979

Bobby Unser drove the “Norton Spirit” Penske-Cosworth to victory in both races of the Trenton Twin Indy at Trenton Speedway in Trenton, New Jersey, US.


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