For those who bought their Hybrids to reduce energy use and save the 
environment... keep reading to learn what your future cars might be like.  
If you don't care about the environment, press delete now.



Changes in Total Energy Use Relative to Gas Vehicles

+40%  E90 ethanol vehicle
-15%  M90 methanol vehicle

-15%  grid-connected (plug) gas hybrids
-10%  grid-independent gas hybrids

-30%  BD20 diesel engine using biodiesel
-55%  BD20 biodiesel hybrids

-60%  liquid hydrogen fuel-cell
-40%  electric vehicle (CA mix)



So according to this EPA-sponsored study, the cleanest/least energy 
intensive technologies in order are:

1) Pure hydrogen Fuel Cells (not fossil fuel derived)
2) Biodiesel hybrids
3) Electrics (CA mix)
4) Biodiesels
5) Diesels
6) Methanols
7) Gas Hybrids
8) Gas
9) Ethanols

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