As industry auto shows go, Chicago generally represents a more easy-going cadence from the brand’s blistering model intro schedule. From a press perspective, the Windy City event is certainly active, though not to the level of Detroit or L.A. Still, they say this is the American auto show with the biggest public attendance. Audi of America regularly saves smaller intros for the event as a result and this year was no exception, revealing a “Special Edition” A4 based on the 2008 model.