Wouldn't the whole point of his super advanced training be that he wouldn't panic?
Yes. Either he did panic (not unheard of) or there were other mechanical/electrical problems.
I have done emergency and ice driving training, it is a requirement to get a driver's licence here in Denmark
The States have the easiest driving tests in the world. It is based on operating a car in good weather with no defensive skill needed and no requirement to drive a manual, or a restriction to automatics if you test in one. In California, I drove around a pretty empty street, never needed to get on the freeway, never did any parking, and no obstacle course. California sees a heavy wet season from late fall to early spring, and snow and ice in the mounutains. If you take the test during the summer, you will never have to demonstrate bad weather driving skill.