Murder is just a word, the definition varies.
'Homicide' is the term used when one person kills another person. Homicides fall into two different distinctions - manslaughter and murder.
www.sevenslegal.com
Manslaughter, Involuntary manslaughter is when a killing is unintentional and the result of recklessness or criminal negligence, such as an unlawful misdemeanor act or low-level felony such as a DUI.
It is the punishment that should be the discussion.
Hardly a discussion where a consensus is easy.
Sounds like road rage under the influence.
Just too stupid, and we know it will continue to happen.