OF ALL THE intimidating high-speed sections of the Nürburgring Nordschleife, the most unsettling may be the Fuchsröhe—the foxhole. I come into this stretch of the famed German track at 93 mph, cornering at maximum grip and body lean, compressing the suspension as I go right-left-right and steeply uphill, making a conscious effort to lift my head to keep my eyes at horizon level. The sports sedan taking me through it all gracefully handles each twist of the wheel, each jab at the brake and accelerator, acting as though the Nürburgring is home territory. But this car is no native. It's the twin-turbo, 365-horsepower 2018 Kia Stinger GT, Korea's bid to challenge the Germans and everyone else for sports car dominance.