• Audi R15 TDI, Peugeot 908 HDI, Porsche 911 GT3 R Hybrid at Petit Le Mans

    Endurance racing has more than its share of heartbreak. For Porsche Motorsport, this weekend's Petit Le Mans at Road Atlanta provided sweet relief to a galling memory: Its unique 911 GT3 R Hybrid race car retired less than two hours before the checkered flag during May's 24 Hours of Nurburgring. This time, the hybrid Porsche completed the race just fine, using roughly 10 percent less fuel than the non-hybrid 911 GT3 RS racers. And in fact, another race car's fuel efficiency--or lack of it--caused a dramatic last-lap upset during this final race of the American Le Mans Series season. Driver...

  • Porsche 911 GT3 R Hybrid
    Tuning Porsche's 911 GT3 R Hybrid Race Car: It's All Software

    Road Atlanta -- Two days before the Porsche 911 GT3 R Hybrid competes for the first time on U.S. soil, the head of its development team said the company plans further development of the technology. Dr. Daniel Armbruster, whose official title is manager of the motorsports development process for the...

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