While wandering from coffee shop to wine shop and other cool places in Seattle today, I spoted a UPS Store that was selling Clearwire.
As you can see the product is being marketed much like cell phone service both for fixed and mobile. You can get both fixed and mobile for rate of just under $95.00 with the promise of "up to 2.0 Mbps."
I ran a speed test using SpeedTest.net and you can see the down was fairly good, but the upload is a tad pokey. But, for mobile broadband, this new service seems to be working fine in my book and would be part of the road warrior arsenal if it was in my area.
You can also add voice for $14.99 that offers unlimited calling in the USA, Canada and Puerto Rico.