Just in case you were wondering.
Canada is known as a country of exceedingly good manners and people who are generally pretty low key. And even if this is largely a deserved reputation, there are always going to be exceptions to the rule, and here we have an example. It is also an equally rare example of a time when a road rage incident deescalates very quickly, as the police are nearby and they simply walk over and arrest the guy for punching the other driver. Sort of stupid to punch some else in a traffic jam.
It does have to be said that, apart from the punching incident, most of what happens is pretty calm and oot and aboot Canada-like.