From SouthParkStudios.com:

NEW YORK, October 4, 2010 Cartmans dream is to join the exclusive ranks of great NASCAR drivers in an all-new episode of "South Park" titled, "Poor and Stupid," premiering on Wednesday, October 6 at 10:00 p.m. ET/PT on COMEDY CENTRAL.
Cartman wants to race with the pros and he's ready to do whatever it takes to make it happen. He's afraid that no matter how hard he tries, he'll never reach the the level of the other NASCAR drivers. Working with Butters as his pit boss, Cartman pulls out all the stops to compete in the race of his life.

Oh man..Cartman and Butters for the mid-season premiere...gonna be awesome!!