SpongeBob and Patrick are in a big bubble with the Atlantean Amulet below them. In the background is Atlantis with the Lord Royal Highness and the Atlantean guards chasing after the magical flying bus.
Also, the episode "Goo Goo Gas" wasn't even released or aired yet in 2007 (the year this DVD was released). "Goo Goo Gas" was released on DVD in 2008 and officially aired on TV in 2009 during The Ultimate SpongeBob SpongeBash marathon.
The DVD's cover shows SpongeBob and Patrick inside a bubble behind the Atlantean Amulet, while in the background the two are inside the Atlantean bus taking flight.