With climate change and the health issues caused by pollution, it's time for radical action and, for a start, restricting the use of private cars in cities. The number of cars on our London streets (and the huge size of many of them) has grown enormously over the last three decades. I know that, of course, some people have very good reasons to need to drive (and delivery vans must deliver, hopefully most changing to electric vehicles asap) but I very much doubt that all those monster cars, often with only one occupant, need to be clogging up our streets. Somehow it's become a 'right' to drive (witness all the opposition to efforts to promote active travel like cycle lanes and low traffic neighbourhoods) so we need better and cheaper public transport (it's actually good in London) and a carrot and stick approach to get people out of their cars.