No, they would have asked for backup and once it arrived, effected a stop and still smashed the windows in.
If the cop was OTT, what was the old bloke doing? Definitely OTT, driving away when asked to stop. And then resisting arrest. And he certainly doesn't seem confused posing for pictures (in a suit!) or arguing about the amount paid out!!
It is a one sided story designed to sell news.
Probably shitting himself that the coppers was going do to his head what they did to the windscreen 
Don't get me wrong here, the stupid old tw*t deserved to have the book thrown at him BUT as I said, if they was 5 big lads in there then they would have been a hell of a lot more diplomatic 
If the driver had been ramming cars all over the place and was a imminent danger to members of the public then fair enough, but that wasn't the case.
The coppers car has all the video evidence needed to put the driver in front of a judge and ban him for a few months.
Well over the top imo 
Very easy to make that judgement retrospectively and from behind a keyboard/screen. I have no idea what was going on the PC's mind and even whether he had had someone else try and kill him a few hours earlier on in the shift. We are presuming and assuming a lot of factors from what we have read in the papers/online etc. For eg: we cannot see the drivers actual reaction when they approach the driver as all I can see is the back of his head (from memory, I havent watched it again). It could have been threatening.
I am generally a very calm person and all my colleagues know that. But there have been one or two instances in my career where I have blown my top in response to a stress situation, disproportionately, because of events that had happened before the said incident. I am not saying that it is justified, but we are all human and I suspect some of us have made worse judgements. Yet to have a "holier than thou attitude" without actually witnessing the event or what led up to it, is a tad unfair.
There are a lot worse things going on in this country including paedophilia and child battering which I would rather worry about than some RR's windscreen. From memory they didnt physically assault the old guy, now that would have been OTT. My 2p.