@CelloMomOnCars
It might be not as much as one may hope. Attempts in Germany showed that (almost) free public transport (@9€/Month) in 2022 did only reduce some 3-6% of car trips even in regions with very dense transit. much less in rural areas.
So yes, there might be notable reduction, but not as much as they may hope.
A more interesting result was that over all trips increased way more than just moving those 3-6% from car to busses, trams and trains. People got more mobile, accessing more destinations resulting in notable additional business.
So maybe public transport is a possible the next step to not only decrease CO2 but increase over all economy?