Linksys was supposed to be releasing an 802.11g car MP3 player this year. Basically, you park your car in your garage, then using your computer upstairs you can copy and organize the MP3's stored on your car stereo. That was the first of these mass-market integrated devices I had heard of, good idea. All traces of it on their website are gone right now, looks like Cisco killed it off. I'm sure another company is working on something very similar to this right now.