the two scariest times i can think of.
1, driving a little fast(55 ish in a 40) person in front of me(a van) swervers around another vehicle at the last second that is stopped to torn. i came inches from rear ending this car at 55 mph and reacted well enough to swerve around them too. literally inches.
2, kid on a bike, wearing all black rides right infront of me as i'm about to pull out of my street. had to goose it b/c i wanted to get out into traffic. i couldnt see him being rainy and dark until his wheel was in the headlights.

the thought of killing/hurting someone b/c i was either being wreckless or just spacing out or whatever scares the hell out of me!