Leap Motion control for Google Street View - live demo at (https://apidcloud.github.io/LeapStreet/)
Install Leap Motion Desktop - https://www.leapmotion.com/setup/desktop/windows (tested with 2.3.1+31549) or
Leap Motion Orion - https://developer.leapmotion.com/get-started (tested with 3.2.0+45899_win)
Run with a web server (e.g., python http.server or SimpleHTTPServer, XAMP or MAMP)
Use your right hand to change the heading, and your left to change the pitch.
If you move quick enough with either, you can block the direction, allowing you to repeat the same movement and thus allowing rotations in 360º