I have a Dension system and Brodit mount which interfaces my phone with my head unit, but I'm wondering just how widespread iphone/ipod touch/android phones are for playing music in-car.
I don't see an option for creating a poll in here, so just a simple "me too" reply would do.
The UI on these devices when playing music is totally unsuited to use in the car. Fiddling with your album/artists lists on them while driving is probably more dangerous than making a call with the phone to your ear.