he “old man” with the long (fake) beard and walking stick gingerly waddled to the green and gold Formula 1 car sitting on pole position. Jack Brabham — the Australian racing driver who co-founded his own F1 team — was all too used to the wise-cracks about his age, and he couldn’t resist a comical retort. But behind the stunt and the good-natured laughs it triggered was a heavy dash of determination. Yes, he had turned 40 in April, and yes, prior to this season, he hadn’t won a points-paying grand prix for almost six years. But look at him now,
