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Since Aero posted the EV chain I'll do the fossil
Out of a 43 gallon drum 19 gallons become gasoline
drum contains 6.1x10^9j and 6-7 gallons form diesel so 26x 1.3x10^8j/(61x10^8+energy consumed in coal to refine(29.8x10^8j))=37.5%
transmission cost of 7%=34.9%
ICE efficiency typically ranges around 30% but we'll say its the max on any gasoline engine system(40% efficient) =14.0%
Transmission cost 10%=12.6%
very generous efficiency of 12.6% for the total ICE system
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