The car triple-F1 world champion Jack Brabham piloted in his first F1 race is up for sale The car is a 1955 Cooper T40 powered by a Bristol 2.0-liter inline-6 Brabham drove the car to victory at the 1955 Australian Grand Prix The car that Australian racing legend Jack Brabham piloted in his Formula 1 debut is up for private sale via RM Sotheby’s…