The problem you're highlighting is that driving is dangerous, more than anything else. Limiting the speed cars can drive is a much better mitigation, along wit

The problem you're highlighting is that driving is dangerous, more than anything else. Limiting the speed cars can drive is a much better mitigation, along with better city design to avoid car use, and minizmize fast car use. The approach of "what if the driver's attention is impaired by <thing>" Has to be rehashed for every instance of <thing> and is never going to fix the root of the problem - that cars are dangerous