Mouth of the Snake [a.k.a. All That Glitters] (1) - S2-E21
Other mistake: At about 7 minutes into the show, you see a US border sign in English and Spanish lying on the ground. The English version says "500 yards ahead." The Spanish version says "150 metros" which is roughly 500 feet, not 500 yards. It is also not clear why a sign fairly far on the Mexican side would have English text at all, especially with wording that is more typical of US rather than Mexican signs. (00:06:49)
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"