What is it about perceived petty slights, such as another driver cutting us off in traffic, that drive us into such a rage? Instances that, if we chose instead not to react, would go by completely inconsequentially and unnoticed by us. Usually, the idea of face-to-face confrontation alone will cause those who would otherwise want to take issue with another's behavior to quail. But while seated in a car, that thin layer of anonymity and safety provided to us by our steel box with glass windows e…