With 620 horsepower, Porsche boasts that the 911 GT2 RS is the most powerful Porsche ever. Twin turbos help wring power out of a 3.6-liter flat six cylinder engine. Limited to 500 production models, the 911 GT2 RS costs $245,000.
Wayne Cunningham reviews cars and writes about automotive technology for CNET's Roadshow. Prior to the automotive beat, he covered spyware, Web building technologies, and computer hardware. He began covering technology and the Web in 1994 as an editor of The Net magazine.