I'll admit that I have jumped on the brake pedal once very hard. Fortuneately I was on a backroad and no one was behind me. Good thing too since I went from about 30 or 40 to 0 in a couple of car lengths or so.

The nav screen had me a bit distracted and I was approaching a stop sign at an intersection. I jumped on the brakes when I realized that I was supposed to stop. I was going straight and I'm sure the ABS had to have kicked in on dry pavement, but I came to a stop just over the line.

This is the first car that has a complex display, and it takes some learning and dicipline to ignore it and concentrate on driving. I've learned the lesson now.