Complete: Connect iPod directly to car stereo rather than FM frequency

I love to listen to audio books in the car, even if it is just a short trip across town.  In the long ago past, I listened to audio cassettes and CD's which gave good quality through the stereo system.  With the advent of the iPod, I had a better method for transporting the audios, but the quality deteriorated.  Although I eventually found a good FM Transmitter, it was still a pain to have to constantly change the station even just driving across town.

So, I left this project rather vague, because there were a number of ways to handle it:  some new technology, replacing the stereo in my car, or buying a new car.

The latter turned out to happen first.  I purchased a new-to-me car that has an auxiliary output for the iPod.  Obviously didn't replace my car for the iPod, but it knocks off another item from my list.  Sweet!