The 100 mark was a red herring. It didn't mean anything, most suppliers thought it was about time, and that barrels were worth more than that a while ago.
The thing that KILLS me about this is that the price increases are all SPECULATIVE. Meaning that this price increase is based on a FUTURE prediction of oil supply availability against demand. The IEA, international energy agency, is now predicting an oil supply shortfall as early as 2030. That figure is based on new data from major oil supplier's current fields directly, and came as much as a surprise to them as it does to the American consumer's wallet. And one of the hardest hit segments is going to be commercial/industrial diesel which, and I just learned this today, requires a rarer "sweeter" quality of crude than most of us consume.