So, Audi’s apparently continuing research into their Rube Goldbergian e-diesel experiments, which attempt to make synthetic renewable diesel fuel.

This is, in a word, silly. None of this is cost-effective, for starters - electrolytic hydrogen production and Fischer-Tropsch synthesis are both rather expensive. And then, there’s the efficiency problems - practical efficiency of the electrolysis step is in the 50-75% ballpark, Fischer-Tropsch is AFAIK in the 25-50% efficiency ballpark...

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Not to mention, this does almost nothing about the emissions impact of diesel combustion - did nobody at Audi get the memo that they killed diesel?

So, I decided to fix Audi’s process for them.

Much better.