The 1966 United States Grand Prix was won by Jim Clark of Lotus-BRM. Despite being on pole position in United States of America, Jack Brabham could not convert this into a win. Brabham was forced to retire in lap 55 due to: Engine.
The race in United States of America was round 8 of 9 of the 1966 season.
The 1966 United States Grand Prix was a Formula One motor race held on October 2, 1966, at the Watkins Glen Grand Prix Race Course in Watkins Glen, New York. It was race 8 of 9 in both the 1966 World Championship of Drivers and the 1966 International Cup for Formula One Manufacturers. The race was the ninth United States Grand Prix (16th including the American Grand Prize races of 1908–16). It was the sixth to be held at Watkins Glen. The race was held over 108 laps of the 3.78-kilometre circuit for a total race distance of 408 kilometres.
The race was won by British driver Jim Clark driving a Lotus 43 for Team Lotus. Clark lapped the field to claim his 20th World Championship win by over a lap. The podium places were filled by Cooper Car Company team mates; Austrian driver Jochen Rindt and British driver John Surtees in their Cooper T81s.
While none of the Brabhams finished, the engine failure of Lorenzo Bandini's Ferrari 312 saw that the Anglo-Australian team could not be caught in the race for the Constructors' championship with only the Mexican Grand Prix. This gave Jack Brabham a unique double, World Drivers' and Constructors' championships in a car of his own make.
source: Wikipedia
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