XM now makes the portable myfi system, looks like an iPod, can be taken anywhere. Just wondering if any of you have it as I have the AUX enabled in my car and use my Ipod through it - does the XM Myfi have an output so I can just use the wire that would normally go to my iPod and stick the XM myfi in there instead? it comes with an FM transmitter, but I do not want to go that route. Thanks!