That video from Argentina is fantastic. It looks to me the person with the video camera must have a GoPro or something similar because the camera angles suggest from is from the POV of his head, and I get the impression neither the Racers or the crew were aware of being filmed that way.
If in fact there was a switchback task involving the TAR 7 meat roadblock made famous by Rob, then that will likely be the only such task for the season.
As to flights out of Buenos Aires, past seasons have seen connecting flights to southern Africa via Sao Paolo, IIRC, and to Moscow (TAR 9) and I believe without looking for flight schedules that flights to Australia/New Zealand are also possible. In my opinion, any direction is possible this early in the Race.