Dream device for my car

Being here at OnHollywood has made me think about a mobile device that I want. I thought of this as I was sitting traffic this morning. I want a podcast delivery interface that has a screen in my car's dashboard and that is connected to controls on my steering wheel (like my car stereo is). I want to be able to scroll through the podcasts that are downloaded, so that I can select the podcast I want to hear and have it play through my car radio. My iPod can do this sort of, but the interface is just not safe when I'm driving. Scrolling through my iPod clickwheel interface with such a tiny screen is hard (and unsafe) for me to do while I'm trying to navigate LA's streets. I want a small screen in the dashboard, and I want the controls interfaced into my steering wheel. OK. That's my wish for today.