What was the name of knight riders nemesis truck?

The name of Knight Rider's nemesis truck was "K.A.R.R.," which stands for "Knight Automated Roving Robot." K.A.R.R. was a prototype vehicle designed before K.I.T.T. (Knight Industries Two Thousand) and was programmed with a self-preservation instinct that often put it at odds with the protagonists. Unlike K.I.T.T., K.A.R.R. lacked a moral compass, making it a formidable adversary in the series.