What's the energy consumption for this? Alas the article has been pulled (for seemingly reasonable reasons) Internal combustion engines already have a fairly t

What's the energy consumption for this? Alas the article has been pulled (for seemingly reasonable reasons) Internal combustion engines already have a fairly terrible energy efficiency, so what's the energy loss involved in collecting CO2 and then rebuilding a bunch of hydrocarbons from that? What this sounds like is an attempt to launder the problems of gas engines by claiming they're consuming the CO2 emissions from other engines, except they're using energy to do produce this fuel. That additional energy has to come from somewhere. Also it acts like clean water isn't also a significantly restricted resource.