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by dmurray 1251 days ago
$200/ton is 20c/litre (assume specific gravity of 0.75, and fuel being 75% carbon by mass).

Here in Ireland, tax on petrol is around €1/litre (VAT + excise duty + "carbon tax", but it all goes to the same place). A 20c extra subsidy would not quite be noise, but it's less than the price fluctuates from quarter to quarter anyway.