Legendary NASCAR driver Dale Earnhardt, Jr. will have a very special guest for his first XM show of 2007: The defending Nextel champ Jimmie Johnson.

Earnhardt and Johnson will chit-chat about the upcoming season which opens this weekend in Daytona (think of it like the AFRO show of racing). Dale's show airs Thursday night at 7:30pm ET on XM Sports Nation (ch 144). And Jimmie, of course, has his own XM show which airs the same night at 7pm ET as part of XMSN's Engine Block.

Jimmie’s guest for the season opener will be fellow NASCAR driver Casey Mears, who recently joined Jimmie as a member of the Hendrick Motorsports team.