What do audiophiles listen in their cars?

The motor.

which motor lenny?

My 2006 Lexus GS-350 Luxury Sedan has a 14 Speaker/300 Watt Mark Levinson Premium Sound Audio System inside of it. And I listen to FM Radio, CD's and my i-Pod with it. I didn't have to do a thing to my Lexus.

Neither did the the 2000 Audi A4 that came before it.

The first serious car I bought back in the mid 1990's was a Honda Accord EX with Leather and Sunroof. Now, I did put a nice system inside of that one. It consisted of a high-end Alpine Radio CD Player with Changer Controls, a companion Alpine Trunk Mounted CD Changer. 700 Watts worth of Rockford-Fostgate Amplification in the trunk to drive an ADS Component Speaker System and Discretely Installed 10" Subwoofer.

--Charles--

I have a work van with a factory Ford am/fm no cassette. It sounds horrible....only 2 crappy 4x6 full range in the doors. I drive a thousand miles a week sometimes, so when I get home I really appreciate my home system.

Some cars have very noisy interiors that make good systems pointless. Most of your economy priced cars are in this category, with some VW's and Chevy Cruze being exceptions.

With the mid size sedans the sound deadening and audio systems takes a big step forward. Camry, Accord, Altima, Malibu, etc. Not a universal truth, but most of them. Upper tier Toyota or Lexus get really quiet according to consumer reports magazine.

But the Hyundai Genesis has been turning heads in this department. Whisper quiet and a stock Lexicon audio system with 14 or 17 speakers, but you have to get more than just the base model for the Lexicon(they do the audio for Rolls Royce and this one is a 7.1 dvd audio). A one or two yr old v6 sedan can be had for low twenties, and the options it comes with is impressive. I'm hoping it's my next car!