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The X-Prize spreadsheet does fully account for the BTU content of E10, and E85 (that the winning Edison2 car used), and for diesel, and for hybrids, and for electricity.
How does counting all the BTU's in each form of energy carried onboard the vehicle, give an advantage to any one of them?
For what it is worth, many folks on the Electric Vehicle Discussion List (email listserve) feel that the X-Prize emissions rules were biased against electric vehicles; because they have to account for the embedded energy; while none of the liquid fuels had to add this.
It also helps to have ~85% efficiency (TW4XP) in the car vs 34% (for the VLC).
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