I don't get it, the passing lane is 1km long, why have a 2km queue when you can have a 1km queue by filling both lanes and then doing a nice orderly merge like a zip at the end ?
Because you are supposed to stay in the left hand lane unless overtaking. In this case there is nowhere to overtake to, they just end up pushing into the front of the queue. Even a blind man can see this is just queue jumping, a practice we abhor anywhere else.
Here in the Wellington area north of Waikanae, they have done away with the overtaking lane. It just gets drivers grumpy when they have been waiting patiently in the left lane, and they see others passing them, effectively extending their own waiting time. People just need to be patient and take their time in the queue.
I was overtaking ... up until the point where the pleb was straddling both lanes :-) And to be honest I still overtook him since my car is only about a foot wide anyway, and then I joined the back of the queue in the second lane.