I‘m wondering how this (final?) barrier is supposed to be overcome: no matter how absolutely perfect the technology might one day become, how are we going to br

I‘m wondering how this (final?) barrier is supposed to be overcome: no matter how absolutely perfect the technology might one day become, how are we going to bridge the gap between “manufacturers cannot legally build a system that deliberately breaks the law” and “actual traffic in the real world only works if sometimes, drivers do not adhere to the law perfectly”?