Headed home from Toy Fair, I'm a passenger in a moving vehicle, enjoying fast wireless broadband somewhere in rural Pennsylvania. It's one of the promises of the "information superhighway" that's moved from the cutting edge to general availability in the last couple of years.
Things change quickly: just last summer, Joel took wireless broadband with him on a week in the woods, and it barely worked at all.
In my case, I'm on a Vaio P--a neat little laptop I'm reviewing this week--but there are many ways to go about getting a car area network. If you have a 3G USB modem, you can grab a battery-powered compatible router. Several vendors make similar devices which have radios built in. And, of course, there are lots of laptops and netbooks, like the Vaio P, which have it all baked into the box: internet sharing can be a pain to set up on Windows, mind you.
Until now, such wonders have always been practical, for us: rented Evdo sticks for conferences, review units, pre-prroduction samples that don't work right. It's nice to finally get to enjoy it, for once.