Imagine a racing event where 30 of the best drivers came from all corners of the world to clash at the nicest race track ever built. Imagine that half of them would be driving F1 cars and the other half would be driving small block V8 powered open wheeled machines with way less tech but more horsepower. Imagine it were 1971. 
This was the premise behind the Questor Grand Prix, a race held at Ontario Motor Speedway with a massive prize fund and more importantly bragging rights on the line. 
Who won and how it all went down is only half the story. There's all kinds of cool sub plots here and if you love racing history, you'll totally dig this deep dive into one of the coolest and weirdest one off races in history.