Why gas is so expensive

I can't decide whether to frame or burn the receipt from a Chevron filling station in Berkeley, Calif., that documents how much I spent to fill the tank of my 12-year-old Nissan Quest minivan on Sunday morning. At $4.09 a gallon for regular unleaded, the total came to $65.68. That's the most I've ever paid for a tank of gas, so I feel inclined to treat the paper record with respect. But a couple… » Full Story on Salon.com