CARLISLE, PA. – August 15, 2017 –  The Knoxville Raceway was abuzz with excitement as the 57th annual 5 Hour Energy Knoxville Nationals neared its halfway point. Watertown, Conn.’s David Gravel had proven that his CJB Motorsports #5 was the class of the field by leading the first 22 circuits of the fifty-lap event.

 

However, as Gravel contended the 23rd lap, something went amiss under the hood that hushed the entire crowd of 30,000 plus spectators at the Marion County Fairgrounds.