"I don't think Rush would need to sign on to satellite because 98% of the population can get it on AM or FM."
Yes, my Cherokee has everything integrated through a Bose system...push the sat button for Sirius, the programmed AM button for Rush, or the CD button which plays cds' burned from my Ipod playlist. Three buttons, and I get everything I want. No need for Rush to switch, and They would need to motivate him to create two formats...BUT, if Mel can identify Rush's successor and sign her ( I believe it will be a her..see previous post)...Sirius will rule.
If Rush goes on XM he will be heard by more people. AM and FM has its limits. People who travel will be able to hear him everyday and the remote NPR only folks will get a new life.