I've heard a bunch of commercials lately about HD radio...has anyone heard anything about this? They're making it out to be as good as XM or Sirius, but...free. As many channels, and as high quality, but you have to buy a special radio...and I imagine there aren't too many HD stations yet...and you still have the problem of driving out of the station...but, it could be cool...?

I had XM for over a year, until they raised the price $5 to add baseball channels. Why didn't they make those an option