But gas comes out of the ground (for current synthetic fuels) and therefore is locked away CO2 no? And lots of energy is used to make it from either gas or H2. They don't already have these magic carbon catchers at scale to make these fuels do they? This is all pretty experimental, including the first raw ingredient, Green H2 is still ridiculously expensive vapour ware.
Then it goes into a wildly inefficient systems to waste more energy as heat.
I'm calling bullshit, this won't be fuel you can just buy because you have nostalgia for an old car, it will be used where electricity just can't be used (hardly anywhere) and I don't think it will be a transition fuel for stuff that can already be done with BEV, that seems like a waste of money making all the infrastructure for a temporay fuel.
FIFY.