‘PEOPLE EITHER LOVE HIM OR HATE HIM.’Red Bull’sCHRISTIAN HORNER, on Hamilton PIERCING SCREAMS SWALLOW up Lewis Hamilton as he enters an amphitheater at the Circuit of the Americas racetrack in Austin on a warm evening in late October. Hundreds of fans have been waiting for hours, pressed against a gate, in hopes of getting something, anything, autographed by the fastest driver on the planet. They shove hats, programs, posters, even cell phones in his direction. One clever devotee places a cap on the tip of his selfie stick, like bait on a rod, and stretches it over the throng. Another name-drops Hamilton’s pet bulldog: “Sign this for Coco!” he shouts. “I love your f-cking dog! You’re my f-cking hero!” Hamilton smiles and signs the hat. Fittingly, Michael Jackson’s “Rock With…