Just My Bill - S1-E6
Revealing mistake: At the parking lot when the cop calls in a tow truck for the first time, you can spot a man inside the car wearing a white shirt hiding inside. He moves his head trying to avoid the camera angle but fails.
Just My Bill - S1-E6
Other mistake: Just as Michael jumps over the roadblock, the whole front of K.I.T.T. flexes showing it's not a real Trans-Am but a mock up.
Just My Bill - S1-E6
Continuity mistake: The blue car is chasing KITT out onto a public road with striping. In one shot from the blue car, they're on the private road, then suddenly back on the public road.
Just My Bill - S1-E6
Visible crew/equipment: As Michael walks over to talk to the guy KITT has cornered by the tan building, the shadow of the boom mic is on the building.
Answer: KITT didn't choose to go off the cliff in Goliath Returns, it just happened as he tried to avoid Goliath. Just 'cus it happened, doesn't mean It's gonna cure his fear of "flying"