Last summer, the Ford Mustang GTD become the fastest-ever Mustang. Now it just hit another serious, important milestone.

Brad Keselowski is having a dismal start to the NASCAR Cup Series season—or so it seems to those on the outside looking in.

The McMurtry Speirling "fan car" creates more than 2G of downforce at any speed - which adds performance, but also makes this stunt possible.

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