Manslaughter for the father. Reckless endangerment and vehicular assault for the kid and assault causing bodily harm for the 18 year old.
That would get him a first degree felony.
Well all I can say is wow. I guess all you motorcycle riders better make sure you miss everything that darts out on front of you while you are observing the speed limit and laws and do not offer aid to those you might hit.
Does you logic include trains? Do you say the “train hit a car” or “a car hit the train?” Hint: it is always the later.