Tethered Aerial Release Developed In Style


 * For other uses of TARDIS, see TARDIS (disambiguation).

The Tethered Aerial Release Developed In Style (abbreviated TARDIS). Unlike its namesake, it was a hot-air balloon, created for Jackson Lake while he was under the impression that he was the Doctor. When piloted by the Doctor, and was key in the destruction of the CyberKing.

Behind the Scenes
In a continuity error, the balloon was described by Jackson Lake as being powered by gas, yet when piloted by the Doctor, it was powered by only hot air. (Though it could be argued that hot air is in fact gas.)