I was poking around on Google Street View today, and I realized you can actually zoom out fairly far and still get the blue layer that shows you their coverage. They've got a massive amount of coverage in the Chicago area, sprawling all the way out to Milwaukee, Madison, Rockford, and even Dubuque. The pattern around Indianapolis is quite different: a central mass with little feelers spreading out radially. So what's neat is that those feelers have already hit Danville, and good old Champaign-Urbana surely will be in the next iteration of growth!
On an unrelated note, the Orange Blossom Cream Ale from Buffalo Bill's Brewery is excellent.