Have you guys seen this?
http://www.azentek.com/webpages/atlas.html
Looks like an Internet car radio to me. Yes, it is vaporware, but until recently, so was HD. As for the cost of Internet access, that may not be as big a hurdle as some think. Like many things technology has brought us, once we get whatever it is, we don't know how we got along with out it. This looks like one of those products to me.
I'm certainly that way. For a long time, I balked at paying for a wireless EVDO Internet card for my laptop computer. I’ve made it an amusing game to see where I could log on for free with Wi-Fi. Problem was, sometimes I couldn’t, or the hosting company wanted to hit me for $10 for the privilege. Now that I have the card, I wouldn't do without it. It has literally saved me many times the cost each month, just in wasted time and frustration. It has also saved me when I was in a place that wanted to charge me $10 to log on for five minutes.
I suspect that when people figure out how convenient it is to have a multi-function computer in their car, they won't really care what it costs. They sure are dishing out cash for GPS systems, MP3 players, PDA’s, cell phones, PDA’s etc. Whether this thing will ever have HD radio capabilities is a mystery to me, but you can be very sure that it will have streaming audio (and video) capabilities.
People will cheerfully pay for this, just like they seem more than willing to pay for an I-phone. It's because they can easily see a positive benefit for them by spending the money.