I think gas prices are going to get so high that its going to force people to eat other people. I mean if you think about it, its simply the survival of the fittest. If gas gets to $7, I guarantee its going to happen. You wont be able to get to the grocery store and since food prices are soaring I strongly believe you are going to see this go down.
Only the rich people will be able to afford food, shelter, and air cars. And since very few will be able to work, they wont be able to afford bullets for their guns forcing them to use spears. The rich people will have the guns, and the poor will have spears and knives. People riding on bikes killing people randomly will be a common scene. And since no one is going to work, there will be no tax money to pay for cops so basically this is going to go unenforced. And since there will be no tax money, the US is goign to be forced to free all prisoners currently in jail. This will all happen I say within 6 months. I just dont see it happening any other way.