recorded by Many A True Nerd of Google Earth VR
Google Earth VR features a tunnel vision methods that reveals a static horizon wireframe around the user.
Strengths:
Very effective for eliminating risks of motion sickness
Weaknesses
Can be more visually obtrusive
For More Info
See the full talk by Google’s Adam Glazier, Nadav Ashkenazi, and Per Karlsson on the UX design behind Google Earth VR at the 2017 VRDC session.