Dude , let's agree on something , please .
Done this in the past with Klier. Look's like you have some special beef with me.
Can you please , ignore me , and I will do this also? ( I am doing it already ; but for the sake of it )
Cardboard in a car , by any meaning , is stupid . Cardboard absorbs humidity . Sooner , or later .
This is just cost cutting. Yes , I expect better sound proofing from a "luxury car" .
And there are so many other ways to sound proof your car , with better future proof materials
Please watch the video . That is exactly what it's done : replacing the cardboard with proper sound dampening materials.
So again , please , just ignore me . I don't want your petty cheap beef with absolutely anything I write
Have a good day