I've
been searching for the solution to my "best way to use an iPod in the car" problem for several years. Then, last summer, I saw a prototype of Harman/Kardon's soon-to-be-released solution, Drive + Play installed in a 5-series BMW and was almost certain I had found just what I'd been searching for.
Check It Out: Finally, a Fantastic iPod-in-the-Car System