Protestations that government is encouraging electric cars and needs more time to comply are rubbish. It’s not as if air pollution is hard to control or even expensive. Most comes from mass car use, so a national network of low emissions zones could be set up within months. Fewer vehicles could be allowed into city centres. Government could spend on better cycling and pedestrian infrastructure.
Spending on pedestrian and cycling infrastructure is an expense, yes.
As is “fewer vehicles in city centres”. It could be an expense worth bearing, it might even be on net profitable. But it is still an expense, not something to just be blithely waved away.
OK, let’s just imagine, £20 billion is the cost to use of cars in city centres. I mean it isn’t, that’s the total cost of air pollution but let’s just imagine that it is.
OK, so, how much is it worth to use to be able to have cars in city centres? More or less than £20 billion?
No, I don’t know either but that is the sum we have to do before we can tell whether reducing air pollution is cheap or expensive, isn’t it?