New article on new fuel for/from Porsche

As it's sourced from a political site, I won't link directly, but Porsche is using a new fuel. Production is wind-powered at some place in Chile where the wind blows 270 days a year (They've never been to western Kansas, I reckon).

It combines Carbon from CO2 in the air, with hydrogen from water (which indicates electrolysis) to make something like methane, which burns clean.

From the article:
"Since it requires as much carbon dioxide to make as it emits in its emissions, it is essentially a net-zero fuel and could be approved for widespread use under future emissions rules. Porsche, other sports car companies and even the Formula One series have been investigating its implementation in order to preserve the performance and aural entertainment benefits of internal combustion engines in their products."

In other words, Porsche knows that performance car drivers find EV's boring, no matter how fast they are. Interesting take on the new fuel, and says it requires virtually zero mods to run in a gasoline engine.

My question is, if you're electrolysing hydrogen, why not just use that? It must not use as much as a hydrogen engine would require, or possibly they're sidestepping the issues with hydrogen handling and infrastructure.