2.5 hours isn't that bad. We could make the occasional appearance, Jim.
(Well... when I am actually in Illiniois, that is.)
If your local store has good traffic, one way is to just set up at a visible table in the store and run some small games with you and a friend. You can snag interested people that way, and hopefully have it take off from there. I hope to be able to do something similar with a new store opening near us.
We have had good success running demo games at conventions - so if you have any local or small cons, run a game or two there to see who is hanging out.