@Paul Barnfather
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> Or 5,400,000 J/mile
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> Conversion efficiency is around 27%, so at the wheels we need
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> 0.27 x 5,400,000 = 1,458,000 J/mile
>
What you should have done is
5,400,000 / 0.27 = 20,000,000
5,400,000 J/mile at the wheel requires 20,000,000 J/mile in the tank.
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> 4) Scaling that back up to get a "MPG equivalent", that makes
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20,000,000/1,332,000 * 30 = 450 MPG
I think your assumptions about 100% efficiency for the electical engine and costs aren't quite right.