This video will take you out of your box where the energy comes from the wall and price of Oil is driven by speculators today. Fossil fuel era is just a blip in the bigger picture of human history and we are already close to its end.
This is an older video, but it is still worthwhile to watch - just compare to what we know now. Below is the link to very good documentary film on the more broader issues of Falling Empire, including this topic.
What will be coming next?
"US Dollar Collapse: China Is Ready To Dump US Treasuries: Xinhua: China should cap forex reserves at 1.3 trillion U.S. dollars: China banker Now China's preparations for Electrification of its transportation system look nothing short of a strategic geopolitical plan how to navigate "The New Normal" with debasing US Dollar, which will lose its reserve status, rising prices of all Commodities and during the Oil shock after Peak Oil will be multiplied by Inflation."