I judge how nervous to be on my bike based on my own automobile driving ability. In 34 years of driving all kinds of four-wheeled vehicles, I've not had a serious accident, and I've had one speeding ticket in the last five years. Despite that, I know I do stupid things in my car; I know I don't see things I should; and I know I drive when distracted, even though the cell phone stays off; and I know I often feel aggressive or irritated while driving a mid-size SUV. I know I have missed spotting motorcycles, especially on the highway. But by actuarial standards, I'm a good car driver, with a good record, and a very clear awareness of motorcycles, so what about the mediocre and just plain bad drivers? In other words, just from honestly assessing my own car driving behavior, I know I had better be extraordinarily careful, alert, defensive, you-name-it when riding a bike. I think the best way to assess how careful to be is to honestly look at our own behavior as cagers, then realize that most of us drive with greater awareness of bikes and driving conditions, and other cagers' behaviors than does the average auto driver. So if we're likely at the top of the cager pile, and still screw up, what about the rest?