I have found the opposite to be true, at least around here.
So it receives it via 3G? Or is it something you can plug in directly to your sirius antenna? Seems like something like that, especially if it could be plugged in via the jack on the bottom like the way the iPod connectors are, would be ideal. Never any risk of signal issues, and you could hide the phone in the euro tray.
Perhaps you think multi-million dollar ad campaigns make a beer taste better. Perhaps you're mouthing your words as you read this.