Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Race of Two Worlds, also known as the 500 Miglia di Monza (500 Miles of Monza), was an automobile race held at the Autodromo Nazionale Monza, Italy in 1957 and again in 1958. It was intended as an exhibition event, allowing American teams from the United States Auto Club (USAC) National Championship to compete directly against teams from the Formula One World Championship based in Europe. The two types of cars competed on the banked oval at Monza which had been completed in 1955. Due to the similarity to the Indianapolis Motor Speedway, where the USAC teams ran the Indianapolis 500, the event earned the nickname Monzanapolis.