Knight Rider - Season 1 Link
: While filming, Hasselhoff would interact with an assistant off-camera who read K.I.T.T.'s lines. If the car was in motion, the lines were sometimes played back to him through the car's stereo system.
: William Daniels would record all of his lines in a studio in about 45 minutes per episode, reading from pages that only contained his dialogue and Michael's cues. Knight Rider - Season 1
An interesting feature of Knight Rider Season 1 is that , six months after they had begun filming the season. : While filming, Hasselhoff would interact with an