This city is suffering hugely from air pollution, much of which is caused by motor vehicles. London is also growing in population through in migration. The likely result is that if we keep the present levels of car ownership through the coming decades, 1. the roads will be unable to cope and 2. the levels of pollution will be impossible to cope with and death rates will rise. The obvious solution is for more people to walk or cycle, neither of which causes pollution, plus use of public transport. The Dutch have achieved this since they went down the same track from the mid-70s and look how pleasant their cities are now. I have a car but find I use it less and less, finding it more convenient to walk, cycle or catch the bus or train. Surely this is sensible?