Here is an updated Martin Driving Schedule:
Nextel Challenge*, LMS - 5/19, Martin
Coca Cola 600, LMS - 5/27, Martin
Dover - 6/3, Martin
Pocono - 6/10, Martin
Michigan - 6/17, Martin
Infineon Raceway - 6/24, Smith
New Hampshire - 7/1, Smith
Daytona - 7/7, Martin - Principal Financial Group
Chicago - 7/15, Martin
Indianapolis - 7/29, Martin
Pocono - 8/5, Smith [Martin possible]
Watkins Glen - 8/12, Smith
Michigan - 8/19, Martin
Bristol - 8/25, Smith
California - 9/2, Smith
Richmond - 9/9, Smith [Martin possible]
New Hampshire - 9/16, Smith - Principal Financial Group
Dover - 9/23, Smith [Martin possible]
Kansas - 9/30, Martin
Talladega - 10/7, Smith
Charlotte - 10/13, Martin
Martinsville - 10/21, Smith
Atlanta - 10/28, Martin
Texas - 11/4, Martin
Phoenix - 11/11, Smith
Homestead - 11/18, Martin
Link