It is price fixing ... but OPEC isn't the driving factor any longer. Wall Street got involved with oil futures, petroleum based derivatives and petroleum based hedge funds and the like. Basically Wall St. bought up all the oil commodities and futures in the $20/per barrel range, held, sold and resold and drove the prices up. OPEC, in turn, increased production in an attempt to flood the market and bring prices down, but the Wall St. speculators just rode the wave up and up and up creating the opposite affects OPEC intended (not unlike Wall St did with mortgages). The price we pay at the pump is more based on complex formulas the oil companies use. If oil is selling for $120 barrel, the de facto costs of refining and transporting the finished product (gasoline) increases proportionally, thus the price at the pump increases proportionally. As bizarre as it sounds, lower cost per barrel is better for everyone (not just the consumer) EXCEPT those slimeballs in lower Manhattan.
Much like our dependence on petroleum, our unchecked corporate greed is our own dammed fault.
I am also sorry for going off topic.