This week, Michael Shelton gets you ready for NASCAR Championship weekend at Phoenix as he previews the four title races that will take place this weekend in the desert. You'll also hear from the four participants in this year's NASCAR Cup Championship 4 including Kyle Larson, defending champion Chase Elliott, Denny Hamlin and Martin Truex Jr. along with owners Rick Hendrick and Joe Gibbs.Shelton also previews this weekend's World of Outlaws World Finals taking place at the Dirt Track at Charlotte along with this Sunday's Formula 1 Mexican Grand Prix.