What do audiophiles listen in their cars?

Well, mine is certainly not affordable, but it is nice. I have the Pioneer P9 setup (4 way digital Xover and time alignment, L/R 31 band EQ) feeding a L/R pair of Alpine F1 amps tri amped on a pair of active Focal Be No7. A pair of Audison LX 900 watt class AB amps driving 2 Hertz Mille 10" in a sealed box. Kimber 8TC and Cardas NR cabling. XM, Ipod, Heaven!

It was a viable business years ago when most factory systems were unbearably poor....after market car audio is now in the realm of sub workers and amps that proudly disturb the peace whenever they are used.

My '04 XJR came with a Alpine system that sounds fantastic.
Single CD in dash & a six pack in the trunk.
Simple DSP controls & fantastic bass from the sub.
But mostly I listen to the engine open up when I put the pedal to the metal & play the audio when stuck in traffic.

Kids who whine and complain, or radio or CD otherwise.