The gas market has turned more and more global in scope over the years. Third world countries are making their way into the current century improving the lives if citizens. You know what they want when they can afford it? Cars. 2.5 billion people in India and China alone.
That doesn't make sense, unless they can afford, and are willing to pay a week's wages for a gallon, on top of the cost of ownership.
Only works if they are getting a squillion miles a gallon, on a squillion cars that cost $500 and carry 10 people.
We are being screwed, and Oz' $5.50 when our dollar is at an all time, pre float high is testament to it.