The main source of the higher prices isn't the gas at all. Gas prices are just the most visible result, because we pay attention to those big numbers on the sign. The primary reason is because of the dollar being de-valued. And this effects the price of everything, from food to fuel to clothing.
For example; QE1, QE2 & QE3 see:
http://en.wikipedia.org/wiki/Quantitative_easingBut yes, big oil companies have been toying with the prices for years. Two steps forward, one step back, it's been the same game as long as I can remember.
Big oil pumps out our domestic oil and ships it around the world rather than selling it here to make higher profits. The same thing is done on the other side of the world. They have been caught red handed holding deliveries because supply was too high. Meaning they actually hold tankers full of crude off the coast rather than allowing them to come ashore and empty, to make higher profits. And big gov' lets them get away with whatever they would like, because of the big financial contributions.
The merger of corporate and state power is Fascism.