Continuity mistake: When Gina locks the door after Michael leaves, the close up of the lock is different than the one on the door. On the door, the top of the faceplate is right next to the deadbolt knob, but in the close-up there's a lot more space that you can't even see the top of the faceplate.
Knight Rider (1982)
1 continuity mistake in A Good Knight's Work
Continuity mistake: Even after KITT's voice modulator changes to the three bars in the episode "Hearts of Stone," any shot of KITT starting himself up still shows the old voice modulator (a simple red square).
Slammin' Sammy's Stunt Show Spectacular - S1-E5
K.I.T.T.: Really, some people are simply too much.
Trivia: David Hasselhoff, who plays Michael Knight on Knight Rider, was married to Catherine Hickland from 1984-89 and in 1992 Catherine married an actor whose real name is Michael E. Knight.
More questions & answers from Knight Rider
Answer: I would say that unless there's visual evidence it was another K.I.T.T. car, as in you could see the bar scanner or cut steering wheel, people on here would correct the mistake by saying more than one 1982 Pontiac Firebird Trans-Am was sold and there's no reason it's meant to be a random car.
Bishop73