Thanks to the almost identical nature of the iPad 3G and the iPad Wi-Fi, jailbreaking the iPad 3G didn’t take long.
Here is the video from the Dev-Team Blog to prove it was done.
The first Dev-Team iPad 3G jailbraeking was done just hours after the device was released and now, 3 days later SpiritJB has been released to allow users, with enough guts, to jailbreak their iPads.
On their blog the Dev-Team, give some important warnings that you should not jailbreak your iPad, iPhone 3GS or iPod 3rd gen without backing up your firmware first. I don’t recommend doing it at all, but I’m a bit conservative on such things, due to a disappointing trip to the Genius Bar at an Apple Store.