What's really weird is that we careen towards one another on narrow roads at combined speeds well in excess of 100 mph. Then we pass each other with mere feet between us. I often think as I pass other cars that death is passing me. One twitch of the steering wheel, a malfunctioning tire, or even an errant gust of wind could end it all. Yet we don't think of these things at all. We don't flinch. We risk our lives hundreds of times a day without a care.