First Test: 2010 Porsche 911 GT3

It's the sound that hits you first. Roll into the throttle at 2000 rpm and rising above the raspy whir behind is a single sonorous wail -- like the bass notes belted out by the Wagner tubas of Der Ring des Nibelungen.This Wagnerian tone lasts for only a second as the rapidly soaring engine speed leans out the brassy resonance and elevates the pitch to that familiar flat-six howl. But this is no