Now, to the unbelievable caught on tape case of road rage. There were tense moments on the highway at high speed, as one car rammed another. It was all revealed in 911 calls just released. And abc's... See More
Now, to the unbelievable caught on tape case of road rage. There were tense moments on the highway at high speed, as one car rammed another. It was all revealed in 911 calls just released. And abc's ron claiborne has more on the story. Reporter: These are the final moments, seen on police dash cam video, of road rage turned physical. He's got a gun. He's got a gun. Reporter: This, after the drivers of these cars had a high-speed duel on a wisconsin highway. We have a car that's being disgruntled on the road. It just hit us. A red acura. Reporter: The 911 caller you're hearing is nicholas flanagan, riding with his friend, jessica ratliff, and four children in a minivan. He said his car was intentionally hit by another motorist. We have a van full of kids. He's coming up on the side of us again. Reporter: But at the same moment, 911 dispatchers are getting another call. The driver of that acura, scott van patter, claiming he's the one that's just been hit. I just got sideswiped by a van. Reporter: Dispatch tells both drivers to stop at a nearby shopping center parking lot and wait for police to arrive. All right. Okay. I do have a conceal and carry. Reporter: That's van patter telling the operator he has a licensed concealed firearm. But when the two cars stop, the confrontation erupts. He's got a gun. He's got a gun. What the . You hit us. You hit me. The guy had his keys in his hand. And he had a key out, stabbing me with it. I have numerous marks on my right arm from defending myself. And the girl, she just kept tryingo punch me. Reporter: Van patter said he finally managed to get his gun out. I felt like my life was in danger. And I didn't have a ce. Reporter: Flanagan told police that van patter pulled his weapon first. But police say witnesses backed van patter. Witnesses informed us that the man and the woman began to assault the man in the car. Reporter: Flanagan and ratliff were arrested on disorderly duct. An apparent case of rage on the road, that turned into real punches. For "good morning america," ron claiborne, abc news, new york.
This transcript has been automatically generated and may not be 100% accurate.