As someone who has invested rather heavily in XM (in more ways than one - I bought a car with the XM already installed), I feel that my XM subscription has been sadly devalued. If you feel the same way, drop a line to firstname.lastname@example.org and let em know you'll be contacting their customer service department seeking redress. (Like I did - I'll let you know if it worked!)
EDIT: We had to change this post. It came to my attention that Sirius and NASCAR made this big announcement during Speedweeks at Daytona back in February. And where were we?