Do you care about car audio?

I like nice cars and I appreciate the fact that I've been fortunate enough to lease and drive some very nice ones.  I would never drive a luxury car out of warranty, but that's not my point.  My point is, as much as I love audio, I never really had any urge to upgrade my car audio system.  Whatever came with the car was totally satisfactory to me.  Right now, my car came with a somewhat upgraded Meridian stereo, but it is not the full-blown surround/subwoofer deal.  It sounds fine and I've never wanted more than a standard decent car radio had to offer.  
Do you people have any enthusiasm for upgraded car audio as opposed to stock?  Then again, truth be told, I've never listened to the fancy car setups and I might be tempted if I thought it was that much more enjoyable.  Who knows.