Why are petrol prices rocketing? Is there still plenty of oil or is the world's economic lifeblood about to run low? The era of cheap oil may be over and a growing number of analysts predict production is about to peak before significantly falling behind demand. Reporter Jonathan Holmes goes in search of an answer in the Middle East, the US and Europe, interviewing key protagonists. He asks if the world is being told the truth about the vast unexploited reserves that are claimed to lie beneath the desert sands of the Middle east. He looks at alternative oil sources and the obstacles to exploiting them. And he explains what peak oil means for Australians who depend so heavily on oil for transport and the tourist income.