Uh... accidental death is never treated as murder.
Murder, by definition of law, has to be intentional. First degree murder is pre-meditated.
A vehicular accident resulting in death, which results from drunken-ness, sleepiness or distraction, is, by definition, not intentional, and will be treated as manslaughter, which already carries a very stiff penalty.
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Of course, one wonders at death resulting from a vehicular accident caused by (sober) homicidal recklessness which doesn't lead to any jail time at all... *cough* *R.Guttierez* *cough*
