HD Radio will take longer to become Ubiquitous (ironic, huh?) than the Internet Radio. Years of fighting over standards and delaying investment into this have cost everything. HD Radio is DEAD FORMAT WALKING.
Problems:
RECEPTION. Dirty little secret. HD pops on an off to analog signal, rendering HD2 signals useless in the car. How important is the car?
QUALITY. Dirty little secret 2. The codec's used are "OK", better than SatRadio, but far from the HD experience branded by HDTV. It is a "Let Down".
All the major companies should shut the whole thing down and announce that HD RADIO is MOVING ONLINE. Benefits: Unlimited channels, constantly improving quality, and a chance the get in front of the new inevitable distribution model.