A glance at the digital speedometer in the 2016 Porsche 911 GT3 RS indicates that I am rocketing down Road Atlanta’s back straight at 137 mph. That’s not normally an eye-opener — it’s a long straight and the coupe is capable of 193 mph — except that I am driving the GT3 RS at triple-digit speeds in a torrential downpour.
Grip and outward vision are severely challenged. My mind’s focus is blurred by the deafening clamor of water thunderously pummeling the inside of each fender, by the wail of a 510-horsepower flat-6 spinning toward redline, and by the boom of the wiper blade smacking the A-pillar with each swift yet futile swoop…