I've seen them at rally's etc, but personally have never seen a set-up I liked. Too busy and messes up the lines in my opinion. I use a portable XM/MP3 player from Pioneer with earphones. Mine (several years old now) has 1Gig of storage for mp3's or I can switch it to XM. The remote is programable with 20 favorite stations and I carry the radio in a variety of places (belt, armband, tankbag, etc). Putting the remote in my left pocket, I can find the buttons by feel for switching from XM to MP3's or between 20 presets, including the XM traffic station for my local area. Depending on overhead obstructions like trees, etc I occasionally lose signal on XM, but then I just switch over to MP3's and roll on down the road.