Old fashioned high-speed showdown Strap in for a good old fashioned high-speed showdown between the world's greatest exotic cars : Lexus LC500 Alfa Romeo Giulia; Mercedes AMG GTR; McLaren 570 GT; Ferrari 488 GTB; Tesla Model S P100D; Porsche 911 Turbo S; Nissan GTR; Chevy Camaro; Chevy Corvette , and winner is ??? It's the