Check it out, from this zoom level Chicago's looking flush as far as T-Mobile
3G is concerned -- yeah, that's right, it seems they've gotten to a point where they're actually willing to show it off. We're betting T-Mobile's Android-based G1
announcement that's set for tomorrow was the impetus for this update, and we suspect we'll learn more about the network then. Feel free to put the site through its paces in your neck of the woods and let us know if you're one of the lucky places. Hit the read link to play with the map, but make sure you tick the "data coverage" option at the bottom of the page first.