That's definitely not one that is progressively getting better with time. I feel like my early 2000s car has a better quality sound than a 2010s BMW I test drove, and I'm pretty sure mine didn't have any kind of an upgrade package on it.
I guess the thing with sound systems is that Hifi has basically not evolved in the last 30? Maybe even 50 years.
I think the last tipping point was the introduction of Class-D amplifiers which provided "unlimited" power compared to before.
Cheap DSP and a better understanding of psychoacoustics maybe.
My point here is that nothing really changed the game. You could get a high-end, expensive Hifi system 30 years ago that matches the sound quality of a high-end system of today.
The rest, Internet access, BT connectivity, Spotify is bells and whistles.
That's definitely not one that is progressively getting better with time. I feel like my early 2000s car has a better quality sound than a 2010s BMW I test drove, and I'm pretty sure mine didn't have any kind of an upgrade package on it.