Do you want the good news or the bad news first? It's hard to deny the excitement of a new Audi RS 4 Avant. RS cars started in the form of wagons, and the super estate car remains first and foremost an Audi domain. Yes others do it, but there's something special in the air when Audi reveals a new one. Make that new one based on the smaller and lighter B9 A4 chassis and using the fire-breathing biturbo V6 of the RS 5 and it's hard to look away. That's obviously all fantastic, but there'...