iBiquity keeps us posted.

hd-radioAccording to the licensor of HD Radio, there are almost 20 million factory-installed and aftermarket vehicles with HD Radio receivers on the road today. An HD Radio-equipped vehicle is sold every four seconds in the United States – about 20,000 cars a day. More than half of all HD-equipped vehicles offer it as standard equipment. There are over 185 different HD Radio-equipped models available, over half of those selling for less than $35,000 MSRP. A whopping 35 automotive brands are now, or soon will be, offering the HD Radio option.