talking of cars Birmingham has just adopted a clean air zone around the city basically meaning if your car doesn't meet the euro 6 emission standard you will have to pay a charge for non compliant cars

https://www.rac.co.uk/drive/advice/e...-need-to-know/

think this will be hitting the likes of Cardiff and Bristol in the not so distant future

it will work effectively in Brum as it got good rail and bus transport links in and around the city although heavily congested but I don't think Cardiff or Bristol have the same infrastructure if they plan on taking us off the roads and onto public transport

just look at East Cardiff not 1 rail station in operation yet !