I'm curious, too. I forget what Iraqis are supposed to get for a price on gasoline, but it was ridiculous. Like 25 cents a gallon or something. So people were using their quotas and then reselling the gasoline on the blackmarket or sending out of the country.

There was an excellent article on this in the NYT months ago. If you read the Brookings report, they actually track average waiting times in line at petrol stations.

One possible explanation is that the real price of gasoline in country is tending more towards the black market price. Possibly cutting demand.

Something else I'd like to bring up is that I think pipeline attacks in Iraq may be overblown, no pun intended. There is a website that actually tracks these listed in endnotes of Brookings report. I haven't read through the whole list, but I get the sense(and this is pure speculation)that the "players" have more interest in making money from the trade in oil/gasoline than in disrupting its flow. We've seen this before. Most notably in Gaza.