Part of what we are seeing here, as indicated by the article, is that some of the per barrel price in dollars shift is due to US Dollar re-strengthening.
Its rarely covered by the media that Oil per barrel prices have only doubled in the last six years to the Euro while in Dollars they had tripled.
A good part of the impact we have here is due to our currency devaluation and not do to the oil market at all.
When you have stupid economic policies and spending and taxing like we do, your currency becomes so much toilet paper.
The weakening dollar came at the hands of Bush policies. They let it slide to benefit American exporters and domestic producers. They apparently believe in free lunches too, as they appear to have ignored that oil is an import, just like Kia cars, but domestic production is based on a world price and therefore just as expensive as foreign oil.