I'll quote the main bit, standard problems and he's not wrong about the solutions. Why should London residents put up with rich out of London drivers polluting where they live? There is a tube and train already. Cutting down the number of routes for through traffic and turning the old roads into parks would be great. And exactly what is already happening in places with ltns

"He cited a north London councillor who described traffic as an “invasive species” that “swamps all other types of transport”. Up to 80 per cent of people living on arterial routes in urban areas did not own cars, with most of the pollution being caused by motorists driving into and through their communities.

Pointing to the “greening” of city centres such as Seoul and Utrecht, he said: “We should start changing our cities and actually start thinking about ripping out road infrastructure and turning them into green spaces or green transport corridors. We have to look beyond traffic.”

This needed to be combined with a drive to get people out of their cars and into walking, cycling and using public transport, which would not only help tackle climate change but also improve health and so reduce pressures on the NHS."