word: Bill Cho, photos and video: L'argus.fr, Adrien Cortesi Ok let's just get this out of the way. Yes, I know we do not get the RS 4 Avant in the States. Yes, I know North American fans have been pining for this uber Avant for years. This is the Forbidden Donut that is hanging just beyond our outreached hands but it's cool to see someone stretch its legs on a track, right? Right? The French website L'argus recently reviewed the RS 4 Avant. Aside from the normal test on public roads...