Critical detail: he thought the guy he searched, arrested, handcuffed, and put in the back of his car somehow Houdini’d his way out of restraints, pulled a gun out from… somewhere… and fired a single shot at him, and so immediately decided dumping his mag at the arrested dude in his cruiser (pointedly, not hitting anything except his own police cruiser) was a good call.
Some pig in Florida emptied his gun into a neighborhood...
No, its' better than that. He emptied it into his own squad car. And in a real tribute to his training, he never even hit the handcuffed suspect he had inside the squad car.