As the Summit World Finals at Memphis International Raceway approaches – it's Oct. 20-22 – one of the IHRA's most popular promotions ever returns: The Summit SuperSeries twin dragster builds.The Summit SuperSeries Top class champ will win a turnkey racecar, built with parts and expertise from many of the IHRA's...

TO: Spec Miata Participants FR: SCCA, NASA, Mazda Motorsports, and the Spec Miata Working Group RE: Class Intent, Direction and Regulations DT: December 19, 2014 Mazda, SCCA, and NASA wish to thank the hundreds of SM drivers and owners who have provided their helpful feedback. With it, we have been...

Related StoriesRenault spokesmen say they are baffled as to why it is at the center of claims it was involved in an illegal Formula 1 indoor engine test with Toro Rosso earlier this year.The French car manufacturer has been accused of having potentially broken F1's testing restrictions by running a...