Need some 3G? Buy some 3G! Macrumors has some shots of the interface that will appear when you need to add data to your iPad data plan. You can either add 250MB for $14.99 or change to an unlimited plan for $26.99 a month. You can also cancel your plan right from the iPad, an fascinating concept.
From Apple’s website:
So if you have a business trip or vacation approaching, just sign up for the month you’ll be traveling and cancel when you get back. You don’t need to visit a store to get 3G service. You can sign up, check your data usage, manage your account, or cancel your service — all from your iPad.
Man. I don’t know if I want to get the 3G one now. Feh.