There should be laws taxing people who insist on driving themselves. And the money should be used to subsidize people who switch to self-driving or install automatic assisted systems on their old cars. That'd partially mitigate the externality generated by human drivers.

How about prison for attempted murder?

I've lost enough friends to drivers who made a mistake. If self driving is better in just that, but worse every other way: I'm for it.

That might be a big if above, but of true them I support it. Drive on a private track or a video game if you must. Leave the real world to safe.