 CONT: After being buried all this time, K.A.R.R. curiously has a  number of minor changes from his first appearance, including: The  scanner at the front is now of a greenish yellow (instead of red).  His scanner now makes a sound identical to K.I.T.T.s (instead of  the deep drone noise of the original). His license plate now reads  KARR (instead of the original KNIGHT). The sound of his engine  now more resembles K.I.T.T.s (with some additional effects),  instead of the fierce "roaring" engine sound previously. The casing  around his voice modulator is slightly different.