Dee ihe ga-aga n'ihu na paragraf a - PC1 mere nke mbụ ya na 1974 Canadian Grand Prix na Donohue ruru eru 24th ma mechie 12th. Donohue lara ezumike nká site n'ọsọ ụlọ ya na Penske na 1974 United States Grand Prix
emere na Watkins Glen mgbe ọ gụsịrị akwụkwọ nke iri na anọ, na-enweghị ike ịkwụsị agbụrụ ahụ n'ihi nkwụsịtụ azụ azụ.