If (IF) this great nation gets smart and desperate enough in ten years there won't by either a hybrid  (gas or diesel + electric) or a pure diesel vehicle on the road. Hybrids are only a way to stretch oil and diesel is oil. Plug-ins will only increase the 20% of nat gas we already import. The hydrogen economy is coming and is the only true viable solution to energy independence and cleaner air that can replace 100% of oil fuels, totally eliminate transport pollutants, and can be a wholly domestic industry.

No other fad fix, cobbled togeather method solves the original problem.