It always bugs me they trot out the Mountain View crash as an example where a Model X struck an unmarked and unprotected jersey barrier end in what visually looks like a traffic lane. Further that multiple human drivers had hit the divider in the same spot and a near fatal accident occurred literally the next day into the same barrier.

If I put a brick wall on the freeway and paint it to look like a tunnel ala wil-e-coyote am I responsible for building the wall or is the driver responsible for hitting it?