First we still need petrol because look around you vast majority of anything you use is plastic, plastic that can't be substituted by bioplastic, from electric insulation to large part of your washing machine to dress. That's without counting lubricants that came from petrol, tires, sweeteners used everywhere, planes, ships, trucks, all heavy machines. So thinking that with EV the need of petrol vanish is mere marketing.

To avoid pollution we need a "circular" economy as much as possible. We do a little in that sense, like using aluminum that we can fully recyclable instead of steel that can't essentially be recycled (at maximum you can recycle high quality steel to low quality one, one single time). We can restart mass using glass instead of plastic for many food containers even if being heavy means a higher transportation cost, we can recycle paper and cardboard but not forever, at maximum one/two time so we need to use it far, far less to being able to have forest grown again etc.

Things are complex and the vague and simplistic idea that we can have smart Riviera's (did you see how most of "green future houses" are single isolated homes in the nature, not cities?) or never-really-designed smart cities it a sketch from a dream and marketing, not reality.

You probably pollute FAR more with EVs than actual car's, only perhaps you pollute someone's else land, for a while, until climate change and environment contamination knock at your door and in that's case is too late.