There are victories that arrive easily, rewarding talent with appropriate prizes, and there are victories that cost something — that demand more from the driver than the sport has any right to ask. Ayrton Senna's 1991 Brazilian Grand Prix belongs in the second category. It was a win that should not have been possible, sustained through a combination of physical strength, racing intelligence and the particular ferocity with which Senna approached anything connected to Brazil.
Senna had never won his home grand prix. He had come close — heartbreakingly close, in some years — and the absence of a victory at Interlagos was, in the paddock's psychology, the one significant gap in his record. The 1991 race offered the opportunity, and Senna took it in a McLaren MP4/6 that was quick and reliable through most of the afternoon.
With laps remaining, his gearbox began to fail. The car became stuck in sixth gear — a tall ratio suited for the circuit's main straight but entirely wrong for the hairpin, the stadium section and the slow corners that make up most of the Interlagos layout. Senna had no mechanical solution. What he had was brute strength and extraordinary car control. He drove those final laps by forcing the McLaren through corners it was not designed to take in sixth gear, using throttle modulation and steering input to manage the understeer that resulted, keeping the car on the track and ahead of Riccardo Patrese's Williams through an act of sustained physical effort that left him unable to move his arms when he crossed the line.
The images of Senna being lifted from the cockpit by mechanics — his hands open, his head back, his body that of a man who has given everything he has — became some of the most iconic in the sport's history. He was carried to the podium, raised his trophy, and wept. Brazil had their victory.