The secondary factor to consider if ICE/ syn fuels is the solution is the emissions from them. Diesel was pushed a few years ago for mpg improvement with the NOx part apparently ignored until it came back to bite.
It’s all very well developing synthetics but what raw material sources? How will the powerful oil industry react?
Urban clean air zones will expand. This SHOULD balance with improved EV use and public transport . Not so easy elsewhere though. ULEZ/Congestion charging is also providing an income source.
My last adventure into London just before Covid entailed a hotel outside the ULEZ zone and the using decent tube/ buses. Public transport back home in West Wales is poor. Even my 60 mile commute to Cardiff when working there was a no-go by public transport.
