Additionally, if I as an individual were to go to the police claiming something similar I suspect they would tell me to claim on insurance, and to try to make myself less of a target by not advertising my identity. I doubt they'd be running fake cars on my commute to try and catch the perp.
Maybe I'm wrong, but the police seem to be going the extra mile (quite literally) in this case.
The key difference between your car and a bus is that with the bus the safety of thirty people is involved, plus the willingness of many more people to use buses which the city has an interest in. Your car is you and your family's safety which is a fraction of the importance.
But he shot a BB gun and it hit a girl in her eye, destroying the function in that organ and lodging itself in her brain, forcing her to have to relearn how to read and speak and other functions people take for granted.
I say this because even a BB gun can hurt someone in ways that are unanticipated.
Just like supporting an economic regime that hurts people in unanticipated ways. Better to be kind and generous to everyone so we can all flourish.