A source at Audi tells me that when the next-gen S4 hits the US market, it may be as a sedan only. This past year, Audi sold a whopping 200 S4 Avants in the USA. That’s less S wagons for America than RS4 Cabriolets…. rare indeed. For this reason, Audi is seriously contemplating not bothering to federalize the B8 S4 Avant.