Actually, it's KITT. It stands for Knight Industries Two Thousand. The car in the 80's show "Knight Rider".
In addition to being virtually indestructible, KITT possesses advanced artificial intelligence capable of accepting voice commands, as well as interacting with its operator and making decisions on its own. In fact, KITT's artificial intelligence is so advanced, that it has formed a kind of personality. This human characteristic has enabled KITT to gradually form a unique bond and partnership with Michael and the rest of the FLAG crew. Although his purpose is to fight criminals, KITT by nature is benevolent and compassionate. KITT is programmed in such a way that his top priority is to protect human life, and thus he does not utilize lethal force.
...jeesh, I'm such a freak'n geek.