The conditions that morning at the Nürburgring Nordschleife were, by any reasonable measure, unsuitable for motor racing at the speeds Formula 1 demanded. Fog sat in the valleys between the circuit's forested hills. Rain fell in persistent curtains. In some sections of the 14.2-mile lap, visibility was measured in metres rather than in the clear sightlines that racing normally requires. Several drivers were openly apprehensive. The race proceeded anyway.
Jackie Stewart, in the Matra-Ford MS10, drove into the fog and disappeared. What he did in there for fourteen laps produced a winning margin — four minutes and three seconds over Jochen Rindt in second place — that has no parallel in the modern history of the sport. He did not merely beat the other drivers at the Nürburgring in the wet; he beat them so completely that the race might as well have been run on a different day against a different field.
Stewart had injured his wrist earlier in the season at the Spanish Grand Prix — a crash that required him to drive with special adaptations to his controls. He was racing, at the Nürburgring, with a physical limitation that would have reduced most drivers' performance. In the fog and rain of August 4, he posted lap times that his competitors, healthy and on a dry track, would have found difficult to match. Each of his laps was faster than anything the rest of the field produced. The winning margin widened every time he passed the pits.
Stewart was, by 1968, the most vocal advocate for safety improvements in Formula 1 — a campaign that many in the sport's establishment resented as an imposition on the nature of racing. The Nürburgring was the circuit he most wanted changed: too long, too dangerous, too many corners invisible to marshals, too many places where a car could crash and burn before anyone knew it had happened. He won on it, that August, with a performance that transcended what the sport considered possible. And then he spent years arguing that the track that had given him his finest hour should never be allowed to kill another driver.