>almost-all-EV city.

Shenzhen is not nearly "almost-all EV" city. There is a lot of wealthy people and almost none of them drives EV. You can see all expensive cars are ICE (blue plates).

Modern ICE cars emit almost no sound or emissions. Its not 70s with black smoke coming from exhaust pipes.

You can take any densely populated city with almost none EV vehicles (say Tokyo) and you can hear birds and air would be very clean.

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shiroiuma 11 hours ago | parent [-]

I live in Tokyo, and the air is not that clean close to highways: large diesel trucks pollute a lot, and also small motorbikes/scooters pollute horribly because they don't seem to require any emissions controls at all.

The main thing keeping the air clean here is the proximity to the bay, along with the fact that there just aren't that many private cars in the first place, since most people take public transit and don't drive because there's nowhere to park.

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jesterson 10 hours ago | parent [-]

Large trucks do not pollute a lot (there are strict standards to that matter). While they do pollute obviously, there is no viable substitute to it. EV truck is a dream at this point in history.

Amount of private cars in Tokyo is huge. Pollution near expressways in rural japan far from bays is next to nothing, so having it close to ocean does help a little.

Small motorbike/scooters are not allowed on expressways.

	▲	dalyons 9 hours ago \| parent [-]
		> EV truck is a dream at this point in history. you should tell china. https://www.electrive.com/2026/01/23/year-end-surge-electric...