The roar arrives before the view. At Sebring’s notorious turn seven, a tight and punishing hairpin, the bone-shaking sound of prototype V8 engines can be felt as much as heard. The most advantageous view of turn seven can be had by hotel balcony or elaborate homemade viewing towers constructed on site by campers and die-hard fans. Overlooking the track, spectators are introduced to one of endurance racing’s most famous and unforgiving corners. During the week of Twelve Hours