You just demanded proof of a negative. To convict any murderer? They yell "It's coming right for me!" and get off scott free in your view. That is where we do not agree. I demand homicide be justifiable. To be reasonable.
No weapon. No movement to act on their vocal threats. We're not talking about two people standing in melee of each other. There are two seperate vehicles involved to physically seperate them. Your comparison is poorly chosen.
Proof that you did it must be beyond a reasonable doubt, but killing someone must also be reasonably justifiable. Unless they had gotten out of the vehicle, opened the door, or had a gun, this case does not pass that test.
If there is reasonable doubt that it WAS self defense then not guilty is the only correct verdict. Prosecution must prove beyond reasonable doubt it wasn't self defense.
I don't know how else to pound this home, innocent until proven guilty. The defense must not prove anything.