> quite expensive
Open Autotrader -> Fiat 500e -> New -> First car: https://www.autotrader.co.uk/car-details/202506113398641 discounted to £15k. That is just a really cheap car. Even the nominal RRP £23,685 is cheap. If you want cheaper there is Dacia Spring and the cheapest BYD.
> The goals of the environmental improvements
The Netherlands of all people should understand about sea level rise and the real world capacity available to absorb CO2.