As the other vehicle passes, something strikes Popper's car — prompting him to unload 11 shots, indiscriminately spraying the busy freeway with bullets in the vague direction of the other car, eyes squinted shut for half of them, blowing out his passenger side window and front windshield in the process.
Miraculously, no-one was injured. Both drivers called the police afterwards. Both were initially released.
The footage, obtained by Local10, was handed over by Popper voluntarily after he later turned himself in.
He told investigators that he thought the other driver was shooting at him, which is why he returned fire. But police said the other driver didn't even have a gun; he did however admit to throwing a water bottle at Popper's car.
Popper's attorney Robert Gershman told told ABC13 his client's actions were completely justified.
"He pulled out his gun in self defense and was justified in pulling out his gun," he said.
Popper turned himself in to Florida Highway Patrol on July 21; he faces two felony charges including aggravated assault with a firearm. He was released on bond and is awaiting trial.
According to Local10, Popper was a civilian fire inspector with Miami Beach, until he resigned shortly after the incident.