Designing a city to be hostile to cars takes more vehicles off the road than trying to push people into electrics. Less cars (of any type) in the city means less health hazards means billions saved means billions to use on climate change research. Please don't forget that tires are the major polluting factor right now, not exhaust gasses. I strongly believe this is more effective than trying to slowly push people into electrics which will still pollute the air with microplastics and make a ton of noise when they race through the city. Lithium is also not particularly clean to mine, so I'd prefer it was used to make batteries for bikes and other similarly sized vehicles. The world does not have the mining and processing capacity to support converting everyone to an electric car.