There has never been a four-door diesel sedan in the Grand-Am series, until now: The blunt, bewinged grille of the Mazda6 GX has blown right through that wall. It's said that racing improves the ...
Long-time racing partner SpeedSource Race Engineering, the team that oversaw Mazda's GX-class championship in 2013, will carry responsibility to develop and run the cars on track. Additionally ...
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