Some strong words there, and I'm a little surprised at you commenting on a car stereo as being comparable to a "good" home system. Regardless of the number of drivers in use, you’re talking about a massively compromised listening environment, which is then also needing to deal with potentially large amounts of background noise (road, engine, other vehicles).
Frankly, the car environment is bit of a mess, which is why I have no issues with using MP3 on the move, but wouldn’t give it the time of day in the home environment.
Your comments about CD outperforming vinyl also make me wonder, for two reasons.
Firstly, it infers that you think that CD is the pinnacle of an audio format, i.e. 16bit. Bearing in mind that we already have “some” availability of 24 bit audio, whether that’s streaming from Quboz, buying from HDtracks and similar, or using something vaguely equivalent, i.e. MQA. You might not be able to tell the difference in a car, and certainly not with the mindset of “speakers are the most important element of a system”, but I certainly can in my home system.
Secondly, it infers that you’ve never heard a serious vinyl fronted system. Don’t get me wrong, I wouldn’t give cheap record decks the time of day, but IMO once you’ve above a couple of £100, I think that vinyl rigs have the advantage and it takes a LOT of dosh on a digital front end to gain comparable performance.
If you think I’m nuts, go to the next Scalford Wigwam show, which is a show run by enthusiasts just turning up with their own gear, to show what’s possible with some effort. Every time I’ve been, it’s the vinyl systems that have best shined, and the for me, the only digital systems close were using some pretty awesome kit such as Wadia or Esoteric units.
Just for context, I’m not even in a vinyl user, and stream from a home server. It required throwing a good deal of cash at the problem for me to be genuinely happy with digital.