Has it been confirmed by any other source that the two jurors WERE sitting in a car together? To me, this seems like a very strange thing for two people to do in these circumstances. You sit in a car together if one person is giving the other person a lift somewhere, and with so many restrictions on how the jurors were supposed to interact, it seems unlikely that they would carpool. The impression that they were "sitting" there, implies that one juror only sat in the car for a short time to chat with the driver/ other juror, which also seems unusual behavior for two people who knew their conversations were restricted. They were also clearly doing this in full view of the courthouse, knowing that they could be seen breaking the rules, yet taking the precaution of not being overheard.