So for fun, we took the souped-up sedan to our Motown Mile to see just how good it really is. The Pirelli World Challenge is a sprint series—standing-start races with no pit stops. Competitors in six classes bash around courses like Mid-Ohio and the Long Beach Grand Prix circuit. It's designed to produce the kind of chaos you love to see in racing, with combatants in steroid-laden street cars. The GT class is the fastest of the field and includes machines like the Ferrari 458, Mercedes SLS, and Porsche 911. Oh, and this Acura TLX-GT […]