In the mid 2000s i took a dremel to the slide-out ashtray of a subaru legacy, cracked open a Zune dock, mini amplifier, and USB hub, hardwired everything together, and then into the legacy's cigarette lighter and speaker harness, and epoxied it back together so I had a slide-out zune dock in the center of the dash. I was sure I had some build photos somewhere, but I can't find them now.