listening to music in the car

Interesting post. Opinions all over the board, so here's mine:
No car stereo can compete on sound quality with a home system in a dedicated room, with room treatment, using a dedicated AC line. The noise floor in my room is around 35 dB. The average noise floor in a car (any car) being driven is up around 70 dB. You lose all dynamic range in a car, you lose any sense of a soundstage in a car, you are hearing all sorts of delayed reflections from all those hard, vertical surfaces causing temporal smearing in a car.
I'm a car enthusiast, and an audiophile. IMO the two don't mix well. When I'm driving I'm focused, usually well above the posted speed limit, and I'm having fun. I never even turn on any music on when I'm driving because some cars have such wonderful engine sounds (inline-6 BMWs, flat-plane crank Mustang Shelbys, Corvettes, exotics) that I much prefer listening to them.
My dedicated listening room is for just that. Listening. No TV, no games, just listening, and it sounds wonderful.
I guess my response would be that the OP is listening for certain aspects that his car system is able to provide.
They sure don't do it for me. 
Happy listening, to each his own.

Tom

I have a high end Burmeister sound system in my car for which I paid lots of extra money.   The truth is that I can only appreciate it when stopped for a light...otherwise, the tire, wind, and motor noise swamp any advantage.

I agree Stringreen  

Assuming one could listen for extended period of time at 90 DB, average background noise in a car is probably 40 to 75 DB.

So we arrive at a stunning dynamic range of 15 DB :-) and intelligibility masked by the combined noise of tires, engine and other vehicles in the traffic.

My current car had an option for Burmeister as well.  I went with stock Bose + Car Play and spent the money on other options.

I have so much music that I have to listen at any opportunity, otherwise I simply would never hear it in one lifetime. For me, listening in the car provides just another of many opportunities. I’m not very much concerned with sound "quality" though when listening in the car.