A new application for Apple's wildly popular iPhone helps drivers calculate their blood alcohol content based on a number of factors, including the person's weight and type of drinks drunk, then provides phone numbers for local taxi services if driving is not an option. It's a great idea (KKTV, Southern Colorado), but unfortunately it's not yet localized for Chicago drivers.
In other words, the app works just fine for anyone who's had a few drinks and is concerned about their ability to drive without getting busted. The Colorado-specific app just doesn't provide one-click access to Chicago taxis.

