Guys below is an article from an interview last October in which the narrator says that Pook considers LV and NH as possible venues for Cart. Have a look, you have to get through a little NASCAR stuff in the first paragraph though.
I don't remember ever hearing about them being mentioned as possibles. Anyone else hear this ? The interview was in the Indianapolis Star originally.
http://www.stockcarcity.com/story_oct24_modestino.html