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![](https://fry.gs/pictrs/image/c6832070-8625-4688-b9e5-5d519541e092.png)
It’s not literally part of the video, exactly because of what you describe. They are separate streams that get injected into the player before the normal video. You can’t skip them or interact with them in any way (pretty sure it also breaks any purchase links etc). Piped or Invidious don’t have them, ytdl also doesn’t download them.
As of now, afaik, you won’t see them if your account wasn’t selected for the experiment, if you are in incognito mode (with uBO on) or if you have uBlock Origin (and other adblockers) off (you’ll see the normal ads and then the video).
Probably one platform (used for several models, sometimes shared between brands. For instance VW Polo, Audi A1, Seat Ibiza and Skoda Fabia are all based on the same platform).
Unless you have cars with modular battery packs, which do not exist right now.