Road & Track lined up the Corvette ZR1 next to the Corvette C6.R ALMS racing car to see how they'd compete in a straight line. Notice we didn't say "drag" or "drag race," since this isn't at the ...

How fast is it? When outfitted with the optional ZTK Performance Package that adds a high-downforce rear wing, stiffer springs, various aero pieces, and a set of super-sticky Michelin Pilot Sport Cup ...