Why does this irk you? The Bakken field contains oil that is notoriously difficult to extract, and estimates of how much oil it contains vary wildly from a few billion to several hundred billion. We are limited in how much we can extract from it, and the US requires 21 billion barrels a day. So it is really only a few day's supply, at best. We are, of course, exploiting all of our remaining resources, including the notoriously risky deepwater offshore drilling. (A new permit was just issued by the government a few days ago.) The reality is that we cannot sustain this level of consumption in a world that has already reached peak oil. China actually now puts more automobiles on the road than the US does, and Indians are trying to come up to speed.
As a world society, we are seriously self-delusional. Our economies are addicted to oil. Sooner or later we will have to face the music. A near-term collapse of oil from Saudi Arabia will force us to face it sooner. Call me selfish, but I would rather put that day off and use the time we have left to developing alternative sources of energy.