interesting enough, the head of the fcc is the secretary of state's son.
and in an issue of 2600 a couple issues back, they mentioned a way to possibly get xm service for free.
essentialy when they send out the signals for the discontinuation of service, they send it out for only about a month. after that, they figure your stereo should have gotten the shutoff notice. if it didnt, it should continue getting service, so basicaly, the idea is, cancel your service, leave your xm receiver off for a month or two, hook it back up and try it out. if you cancel anyway, its definitely worth the try.
as for the antenna, i have a bed cover, and dont believe it would go through that, any other ideas for a hidden install? if you guys want, i can retype the information about xm from 2600 some time, not doing it now, but odds are none of you all are on right now anyway.