Just had a look at the latest blogs from an old Adobe fellow, now at the Google Team:
http://jnack.com/blog/2017/09/15/google-earth-vr-adds-street-view/

The main facts:
This update lets you explore Street View imagery from 85 countries right within Earth VR. Just fly down closer to street level, check your controller to see if Street View is available and enter an immersive 360° photo. You’ll find photos from the Street View team and those shared by people all around the world.