A Nice, Indecent Little Town - S1-E17
Revealing mistake: In the scene where Michael chases the counter fitter and KITT supposedly jumps over some cars with his turbo boost, you can see a jumping ramp which wasn't there before, painted in the colour of the street behind it. (00:25:25)
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