When someone has a head mounted display on, it is hard to tell whether they are paying attention to the display or to the outside world. That is essentially the

When someone has a head mounted display on, it is hard to tell whether they are paying attention to the display or to the outside world. That is essentially the issue here and I think that as the technology progresses this will only become more ambiguous. Drivers should have there full attention focused on the road and any ambiguity in the situation is unwanted from a law enforcement/ harm reduction perspective.