In which year was this British racing car manufacturer founded that built a vehicle Australian Jack Brabham drove during the 18th BRDC International Trophy?
1966 BRDC International Trophy:  The race was run over 35 laps of the Silverstone Grand Prix circuit, and was won by Australian Jack Brabham in the Brabham-Repco BT19. Brabham: Motor Racing Developments Ltd., commonly known as Brabham , was a British racing car manufacturer and Formula One racing team. Brabham:  Founded in 1960 by two Australians, driver Jack Brabham and designer Ron Tauranac, the team won four Drivers' and two Constructors' World Championships in its 30-year Formula One history.
1960