Killer Z's: The ZR1 is the fastest and most expensive production Corvette ever. So how does it stack up against its stablemates? 2009 Chevrolet Corvette Z51 / Z06 / ZR1 http://www.caranddriver.com/features/2009-chevrolet-corvette-zr1-tested-compared-with-z51-z06 2009 Chevrolet Corvette ZR1: First Instrumented Test Results http://www.caranddriver.com/features/2009-chevrolet-corvette-zr1-first-instrumented-test-results