I’m not sure what this proves. It’s not like walls with photorealistic pictures of roads on them are things that human drivers regularly meet and overcome
It shows that camera-based systems can be prone to optical illusions that lidar-based systems (which detect objects and their distances directly instead of trying to interpret an image) wouldn’t be fooled by.
There was a news story from several years back where a semi truck was making a left turn across a mostly empty highway and a Tesla on autopilot plowed directly into the trailer at full speed, decapitating the driver, because the cameras were fooled in much the same way as the test above by the white trailer blending in with a cloud on the horizon.