I am posting this with my LAN connection unplugged and WiFi disabled. And no, I am not using a dial-up connection. This is 3G at work.
Cingular has just rolled out 3G coverage in parts of the country, and so of course I replaced by GPRS card with a new HSDPA/UMTS EDGE/GPRS card (a Sierra Wireless AirCard 860). In other words, I can be online via GPRS just about anywhere on the planet, and via 3G connection in the U.S. where available. The card also supports WiFi, but I disabled that.
Initial speed tests show 600K download speed and 60K upload, quite a bit faster than GPRS. I’ll be on the road quite a bit now and plan to give this baby quite the workout.
Oh, and Cingular is offering a $60/month unlimited data plan now.