That sound you hear is Mario Andretti speeding around the track ... He also won the grueling 12 Hours of Sebring endurance race three times (1967, 1970 and 1972). From 1975 to 1981, he focused ...

Daytona's annual sports-car run, the Rolex 24, began in 1962 as a 3-hour effort. It's been won by Mario Andretti and Paul ...

Still, Mario Andretti has been invited to join the board ... the 24 Hours of Daytona, the 12 Hours of Sebring, and the Pikes Peak Hill Climb. When he made the decision to go full-time in F1 ...

At least, that's what the event's promoters figured when they teamed up with Swiss watchmaker Alpina Genève to offer an official timepiece of the race: the Alpina Extreme 12 Hours of Sebring.

The Rolex 24 also gives up over a decade of history to the 12 Hours of Sebring, which was North America ... and the aforementioned A.J. and Mario. The list of all-time overall wins, however ...