I wouldn't mind using a rule where a certain number of DLs are permitted each year and that only the safest drivers get them. They are a responsibility not a right, yet we treat it like a right. Most likely self-driving cars will save us first, but if not some sort of leveling up system that awards points for things such as adherence to the speed limit or aggressiveness in acceleration/deceleration could be useful. All this information could be managed via a black box in your car. If you aren't in the top 80% or so, you shouldn't be allowed to drive.

Not necessarily. When you ask glass for a photo, it finds the best focus lock over some time period that includes a short time before and after the command was executed. It has some sort of running buffer. This could work exactly the same way.

Right, but you could have it continuously recording for as long as its memory will allow, and delete from the beginning when it gets too full. Then, have it save when it detects a collision.

With bike commuting becoming more and more popular, I'm guessing this will be a thing soon. And it should be, as this terrible story shows.