Jochen Rindt becomes Formula 1's only posthumous world champion • Piers Courage is killed in the Dutch Grand Prix • Bruce McLaren dies testing a Can-Am car at Goodwood • March Engineering enters F1 • Ken Tyrrell becomes an F1 constructor • Three-time world champion Jack Brabham retires from the sport • Dunlop Tyres withdraws from F1 • Richard Attwood and Hans Herrmann take Porsche's first Le Mans 24 Hours victory in the 917K • Al Unser Sr takes his maiden Indy 500 win and first USAC title • Steve McQueen shoots movie during Le Mans 24 Hours
Richard Attwood and Hans Herrmann score Porsche's first Le Mans win
Jochen Rindt becomes Formula 1's only posthumous world champion having died at Monza
Al Unser Sr claims his maiden Indy 500 win and IndyCar title
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