Looks like it is, but I don't have any trouble with black boxes on state owned vehicles.
Here is the real question: There was an OFFICIAL STATE TROOPER driving the car. He’s a sworn officer of the law. Why did they need ANY other information to know that the car was going 91? Shouldn’t the state trooper have been able to say “I clocked myself going 91 miles per hour using my spedometer”? After all, that’s what they say when they testify about other people speeding.....