Something very like! My TARDIS. Time And Relative Dimension In Space. Only she can't pass through the forcefield, and what with the planet hurtling through space at an incredible speed, that more or less rules out time travel beyond a few microseconds. Makes her more of an ARDIS at the moment, really.

[This incredible string of blather comes out with the high-speed pride of a father bragging about his child. Afterward, he calms down a little.]

Anyway. Here I am.