Then somebody notices the Alfa's Pirelli P Zero Corsa AR Asimmetrico front tires. They're asimmetrico, all right: Half of each tread block's rubber is gone after two sets of three hard laps. The Tesla engineer points to his car's Michelin Pilot Sport 4Ss that are at worst scuffed. "We could do that time if we were willing to destroy our tires," he says. The Tesla's rubber contains complex compounding across its tread for minimal rolling resistance but stickiness for corners (with foam glued into its interior to reduce noise). The technical investment in this tire—which can generate 0.95 g's of cornering grip from a 4,078-pound car without significantly damaging the rubber and still deliver 310 miles on a charge—is remarkable.