As an instructor in driver education at Unionville-Sebewaing Area High School in Michigan, I've learned that even the brightest students can become flustered behind the wheel.

One day I had three beginners in the car, each scheduled to drive for 30 minutes.  When the first student had completed his time, I asked him to change places with one of the others.  Gripping the wheel tightly and staring straight ahead, he asked in a shaky voice, "Should I stop the car?"