The perpetrators of most vehicular homicides face little to no consequences.
You'd have to be an utter asshole (like a kid totaling three cars in a year, all going 70-100+ mph on urban streets), or the world's dumbest criminal (motorcyclist out on parole running a red, killing a pedestrian, fleeing the scene, and ditching the motorcycle in a field) for killing someone with a car to be more than a 'whoopsie daisies, at least nobody important got hurt'.
In my town, just last year, a cop running down a young woman when she had right of way in a crosswalk, while doing 74 mph in a 25 mph zone at night, with no sirens, got a $5,000 fine for it.
That's how much the life of a grad student is worth.
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Look, I'm all for traffic enforcement, but anyone who thinks that bikes are the big problem on the road is nuts.