In my view, punishing drivers for accidents is always going to be to little too late, because accidents are rare. Also, people who can afford good defense can avoid punishment to a substantial extent.

To solve these problems, you either have to enforce crimes at a lower level (e.g., punish them for poor driving rather than for killing someone) or make it harder for people to mount a defense. Both of these things encourage abuses of the justice system, e.g., "driving while black."