Not a single example? F1 drove massive advancement in carbon fiber construction for cars, light-weight mono-body frames, turbo development which is how basically every ICE car meets emission standards, regenerative braking tech, composite material development - it's a pretty long list and F1 ends up being the development and proving grounds before manufacturers invest.

Hell, my car literally uses an aluminum monotub chassis directly inspired by F1.

There are a lot of faults with the FIA and the decision to spread races out all over the world including some very questionable countries and sponsors but that speaks to the business side and not the technology and engineering which has been quite impactful

What bothers me most about F1 (and other motorsports to a lesser extent) isn't even the direct carbon footprint.

Even if they get to truly net-zero carbon as a business (doubtful), F1 is primarily funded to be marketing for the petrochemical industry. Every week they go out and talk about the hybrids and synthetic fuel you mentioned as if they haven't been downplaying climate change and blocking actual clean energy all over the planet.

OK... I think this is a bit of a non-sequitur for this thread.