> Take the camera-based driver attention monitoring that works in my seven year-old Tesla, which notices IMMEDIATELY if I look away from the windshield for more than a second or two, and then require that in the human-driven cars

This. Put it on all vehicles that are driven (exc. waymo, zoox, and the like).

It looks like something similar is already happening in the EU (with momentum in the US too.) (See https://spyro-soft.com/blog/automotive/driver-monitoring-sys...)