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I think we should stick to mild curses at worst and not actual nasty death wishes.
I'd also caution against building the pollution/air quality argument up too much. Electric cars are already waiting in the wings and stand ready to move pollution elsewhere while still isolating people in cars. Next up is the 'road safety' argument--when self-driving cars come along, everything will be perfectly safe! Long queues of cars will move off simultaneously at junctions!
Obviously, anything that reduces air pollution and deaths or injuries is welcome, and there will continue to be motorised carriages in London no matter what, but to my mind the main problems with them are the isolation of people while they are technically in the public realm, as well as the inactivity and geographical dissolution (trip origins and destinations increasingly far apart) that they breed.
The latter bit is probably an over-reaction to your post, but politics is already building up to letting politicians off the hook if only they support electric cars--look at what Zac Goldsmith has said recently.
Tom conti, so near to being named correctly