Most of the car manufacturers want to go with Bose or Harmon-Kardon because of the name recognition so you feel cooler when you upgrade to the premium sound systems. Now are they crap in cars? Not really. They are tailored to that specific car and any aftermarket system would probably end up being lackluster...especially when you are trying to replace/upgrade those 10 speaker or more systems in cars these days.
I have premium sound in my Lexus IS300 but it doesn't say what speaker company was used so I have no idea who they subcontracted out for their sound, but it sounds really good as is.
It seems that the one thing we all agree on is how horrible Bose speakers are ha ha. But Bose are installed in Many new cars as a upgrade, are they also cr-p? I do remember the old 901s They had a great soundfield. Do they still make the 901? "0" by the way went shopping at wallmart yesterday They had a Sanyo l.c.d. on display and the picture really looked nice. I do remember when I had a car stereo business I sold Sanyo car stereos and they were the best car stereos on the market. I even went so far that I called Sanyo customer service, seems that they back what they sell anyone own a Sanyo ? how do you like it stewee