He does need to go.
I would like to give big props to the driver for the way he handled himself and not escalating the situation to the point of getting out of control.
This guy needs to go. End of the discussion. Sounds like he is on the verge of a mental break. With any luck, the cops on duty reported this.
Unfortunately, just like in other areas of life, there are policemen who do not have the right temperament to be in that line of work.
Sadly, I think some bullies join the police force because of the power it gives them.
It's sad because I know there are a lot of police officers who really do want to keep the peace and now they are all being seen as out of control jerks by many in society.
The man in this incident should be relieved of active duty and possibly given a desk job.