Martin Truex Jr. competed in his final race as a full-time NASCAR Cup Series driver on Sunday, and two insiders loved his reaction when the race ended. On The Teardown podcast, Jeff Gluck and Jordan Bianchi of The Athletic discussed Truex ending his full-time career in NASCAR. “He was doing some great things for a while. He was running right up there,” Gluck said. “You talk about somebody that did not regret their decision whatsoever. No tears, no emotion, no sort of the quivering lip like, ‘I’m really gonna miss this.’ Boy, that is one happy man.” CLICK HERE to go to PrizePicks and use code O…