Polestar's getting access to Tesla Superchargers, but they'll need an adapter until they start putting Tesla plugs on their cars. Not sure when it's going live, though.
This is old. They had planned to allow the access at the beginning of 2024. They delayed it twice since then: mid-2024, then for the end of it. Oh, sorry. Three times cuz we are expecting the access in the next few months...