wild scene in florida. Police searcng for a gunman after a driver was shot and killed on a highway in tampa. Linzey janis is following the story. Reporter: Police say it looks like road rage. The victim called 911 just before he died. This traffic camera footage shows the after math of a bizarre, fatal shooting on a highway outside of tampa. Police seen here carefully approaching the victim's car, unaware of the shooter's location. They found an unarmed man shot andilled in his car, a potential victim of road rage. We know at one point in time, this person pulled up and showed him a handgun. They know because the driver called 911. Saying a man with a gun followed him after leaving a store. Then dispatchers heard gunfire. During the time he was on the call, they actually heard the shooting. There was a series of shots. Reporter: It's an all too familiar scene. Check this out in the middle of a california intersection. They are fighting. Reporter: A lawyer and a retired cop. In north carolina, police say this man, bradley turner, followed a group of young people he says cut him off the road. A brawl breaks out. Then right on camera, turner's wife hands him a pistol which he docks and apparently fires. In this case, a victim is left dead while police are still looking for the suspect. Police don't know what provoked it be but be these are a growing threat. According to the u.S. Department of transportation, there have been more than a thousand death due to road rage since 2007.