Cheap oil is history

For the tens of millions of American motorists patiently waiting for gas prices to come back to Earth, the news from the oil markets is not encouraging.
For the last year, government forecasters have reassured us that the unusually high oil prices we’ve seen since 2002 — around $30 a barrel — were temporary: As soon as global markets recovered from the mess in Iraq, oil prices would drop and gasoline prices would eventually follow.