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"  The Mazda Skyactiv-D finished first and third at last weekend&amp;#039;s Rolex Grand-Am GX, a significant victory not only because it&amp;#039;s the first time a diesel-powered car has taken the top spot in a Grand-Am competition, but also because it only took four races to claim the win. Most of the action involved a three-way battle between the two Mazdas and a Porsche Cayman. The engine in the diesel-powered race car shares more than half of its components with the production Mazda6 Skyactiv diesel, which our own Ben Wojdyla praised as packing &amp;quot;...a mountain of buttery smooth torque that makes acceleration and passing a delight.&amp;quot; While Audi has repeatedly proven-- often, to rather predictable effect-- that their TDI diesel engines can dominate the top-tier prototype class at Le Mans, Mazda&amp;#039;s Grand Am win is more of a victory for the common driver: after all, what better way to promote diesel technology for everyday use than in a moderately priced sedan that can beat Porsches on the racetrack? Related: 2014 Mazda6 Test Drive "^^<http://www.w3.org/2001/XMLSchema#string>
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