No it has not aired yet. They may not have even started on the editing. But it will probably be their most anticipated episode ever, thanks to a license plate that set off a riot. Personally I am a bit skeptical that nobody involved in the filming thought anything of the plate, since in the UK personalized license plates are made using clever combinations of UK-standard number plate sequences, like Richard Hammond's "OL1 V3R" for his beloved Opel "Oliver" from the Botswana special. They should have also remembered that 30 years later, losing the Falklands War remains an open, festering wound in Argentine culture, and them being Brits makes it feel like an even bigger insult to them.