KITT takes off, with Hummers giving chase. KITT reports that the road is mined, so he adopts evasive maneuvers. Said "maneuvers" involve driving directly down the middle of the road while explosions go off on either side. KITT suggests transforming into a more agile shape, and promptly hits a mine, which sends him pinwheeling through the air. Of course, because KITT is only vulnerable to mines while in mid-transformation, so it makes perfect sense that he'd keep going while in the middle of a minefield. He certainly couldn't, say, use Turbo Boost to jump all the way over the mines. Or use his X-ray vision to see the mines and avoid them. Or stop, transform into an off-road vehicle, and then go off into the woods. No, he had to choose the one option that would result in becoming disabled. Nice going, genius computer! Mike and Cassandra flee, although Mike doesn't want to leave KITT to the bad guys. What, does he think they're going to torture KITT? I'm not sure waterboarding works on a car. In fact, having KITT sitting in the middle of the compound sounds ideal, what with the remote control of computers and X-Ray vision and all that. We don't really need Mike at all. He's essentially ballast.
The bad guys find KITT empty. Cooperton's orders are that Mike and Cassandra be shot on sight.