Furthermore, the demarcation between what it can handle and what it cannot is neither simple nor clear. As this case shows, you can be bowling down the sort of

Furthermore, the demarcation between what it can handle and what it cannot is neither simple nor clear. As this case shows, you can be bowling down the sort of highway it is supposedly suitable for, yet suddenly come across something it cannot deal with - and maybe something it did negotiate successfully in the past. As long as Tesla says that driver vigilance is required at all times, while simultaneously promoting it as if it were true automation, the risk to third parties, from Tesla autopilot users who don't understand what's going on here, is unacceptable.