CAMI (Terra Wind)
Credit: Courtesy Cool Amphibious Manufacturers International

Made by Cool Amphibious Manufacturers International, the Terra Wind can't maneuver like some of the smaller vehicles on our list, but then again, it doesn't need roads. As this promotional video demonstrates, you can pretty much just plow it into a lake and do a cannonball out the back door before heading back inside to fire up the surround sound.

The Interior: The sleeping quarters and rest of the inside of the Terra Wind are custom-designed for each owner.