Originally Posted by lach doch mal:
“Well, but not every pub brawl is initiated with criminal intent. Imagine you go to the bar, and you bump into someone and that person starts attacking you right away (because they are drunk). As a consequence you push the person, and they hit their head on a table and die. What then? For all we know that's what happened in the case of Danny's father. Driving is not criminal, but what happens if because of inattention I overlook a stop sign? Then it becomes criminal! I'm just aware that I have been lucky so far that I haven't been involved in anything like that, I certainly don't think it's just because I'm a brilliant driver or a peaceful non-violent person.”
As long as you're using reasonable self-defence, there would be no criminal assault, so you wouldn't be guilty of manslaughter. If you picked up a chair and repeatedly smacked them across the head with it, say, in contrast, you probably would be!

As equally you would be if there wasn't an element of self-defence.
When you're in a car you do have some responsibility to drive carefully, because you are in control of what is effectively, after all, a lethal weapon of sorts.

But even if you're driving carelessly, there's not an intention to cause harm - in a violent criminal assault there most definitely is.