>You can’t outrun the biker and if you pull over he might shoot you or beat the crap out of you.
It’s not enough of a reason to try and kill him by smashing him into wall. If that biker hadn’t hit the wall at just the right angle to bounce off he would have been dead. That was attempted murder without a threat of deadly force to justify self defense in that manner.
And just to be clear the biker was a massive idiot for kicking the car. In no way was the property damage he inflected justified and he was asking to lose control of his bike and die from doing it.
Based on what I read here bikers carry guns, chains and hammers. The car driver had good reason to panic.