As his duet with Tyler Hubbard on "Undivided" continues to resonate with fans, Tim McGraw is drawing a connection to one of his previous career-defining songs. McGraw was on a cross-country road trip with his wife Faith Hill when Hubbard sent him "Undivided" just after writing it. The admittedly "technically challenged" McGraw pulled his car over at a gas station and listened to the song. One listen turned into several as McGraw kept it playing during the entire drive home. "It immediately hit me right in the heart because it's easy to go down a dark path sometimes," McGraw shares during an appearance on the