The legend: the Porsche 917. The driver: Patrick Long. The only North American employed as a factory racing driver by Porsche. Wins: 24 Hours of LeMans class winner, 3-time ALMS champion, Rolex 24 at Daytona, 12 Hours of Sebring, and class winner at the 2013 Baja 1000. That's what it takes to drive this car. Isn't this one of the most epic engine sounds ever?