I think self driving cars should have both high dynamic range cameras and LIDAR and maybe time of flight cameras. Input from a LIDAR system would be much more likely to detect that barrier, and computer vision via a camera much more likely to be fooled. I think an investigation into why the computer vision system failed to detect a barrier under clear daylight conditions will show the negligence on the part of Tesla. Lane lines are frequently not well marked, and sunlight glare is a difficult problem for cameras. However, you have to be able to detect a concrete barrier, in the worst of conditions. Does Tesla have in place some kind of determination of its lane detection accuracy and then alert the driver that it is turning off auto-pilot when accuracy is low?