Apparently, as you pay more for gas due to the recent spike in oil prices, there is actually someone - some one person - to blame:

Stephen Schork, a former floor trader on the New York Mercantile Exchange and the editor of an oil market newsletter, said one floor trader bought 1,000 barrels, the smallest amount permitted, and sold it immediately for $99.40 at a $600 loss. "They absolutely overpaid," he told Radio Four's Today Programme. "He paid $600 for the right to tell his grandchildren that he was the first in the world to buy $100 oil."