Mario Andretti is an Italian-American former racing driver who won the Formula One World Championship in 1978. He is one of the most successful American racers of all time, having won the Indianapolis 500, Daytona 500, and the 24 Hours of Le Mans. He is also the only driver to win races in Formula One, IndyCar, World Sportscar Championship, and NASCAR. Mario Andretti is a legendary racer and is widely regarded as one of the greatest drivers in the history of motorsport.