For the 6th year, Road & Track has gathered some of the most impressive performance cars to ever be offered. The eight-car group consisted of Chevrolet Corvette ZR1, Ferrari 488 Pista, McLaren Senna, Porsche 911 GT2 RS, BMW’s M5 Competition, Audi RS5, Alfa Romeo’s Stelvio Quadrifoglio nad the Mercedes-AMG E63…