Permit holder protects himself from an on road attack in Arlington, Texas

Note that it is the Escalade driver, the permit holder, who sought out the police for help:

Police said a man driving a Cadillac Escalade was driving on Texas 360 near Interstate 30 when five people drove up next to him in a Chevrolet Suburban and began staring at him.
The man told police that the people in the Suburban followed him onto westbound I-30 when they rolled down their windows and pointed guns at him. The Escalade driver -- who has a conceal and carry gun permit -- pointed his gun back at them.
Police said people from both vehicles began shooting at each other as they exited Cooper Street. Investigators are trying to determine who fired first.
The Escalade driver drove through residential streets trying to evade the Suburban when he saw an officer on Northwood Court and approached him. Three of the people in the Suburban told the officer the man was harassing them and then fled on foot, leaving two of their friends -- one who was shot in the leg. . . .