Yeah, right. Let me know how that works out for ya. Like anybody is going to trust something like this, when the US Federal Government has it's fingers in the pie. This thing is dead in the water from day 0.
DARPA contracted with universities to create it. Just because the military's interests were once aligned with advancing communication technology between academics doesn't mean we should accept that all or even some of the current government's "involvement" is simply for the betterment of mankind. These people ultimately rely on the threat and use of force to do their "job" no matter how remotely connected its authority is to the U.S. Constitution.
Drivers licenses are mandatory, and you get heavily fined if caught driving without it. This on the other hand is supposed to be voluntary. I certainly won't be volunteering any time soon.
False. Drivers licenses are only required if you want to drive on public roads. If you have a lot of property with private roads (farms, quarries, etc), you're free to drive unlicensed. Hell, you don't even have to get a license plate for your car if you never put it on a public road (although you'll probably have to register it with the state for property tax reasons).
In other words, it will be possible to avoid this ID, but so ridiculously impractical for most people that almost everyone will be expected to have and use one.
This idea is about as dead as the Norwegian Blue. http://www.youtube.com/watch?v=npjOSLCR2hE