Watching it happen, it was hard to appreciate the magnitude of the achievement. The big blue roadster hardly made any noise, and it was being driven with such poise, such command, that its motion around the track didn’t really rivet the eye either.
Yet, as Mark Donohue cruised his turbocharged Porsche Panzer around the final lap of his last Can-Am race at Riverside in 1973, he was climbing a summit of personal fulfillment. The legendary driver-engineer himself said that taming this immensely powerful, initially very difficult machine was “a monument to my career.”
