You've got (U.S.) supplies coming from a lot of places: more imports, more refinery capacity and more production from the Gulf of Mexico, and that's pulling down prices in the short term.
American drivers have the capacity to handle higher fuel costs. With the economy in good shape, it is tough to believe people will stop driving because of an extra 50 or 75 cents per gallon.
They're supplying the market the best they can, but they have very little impact on global refinery capacity and very little impact on geopolitical events.
The bigger question is does OPEC have excess capacity that it can tap into in the longer-term, ... It appears they're unlikely to raise their quotas, and that's not going to assuage market concerns about their capacity.