Probably not made for the monitor at all and just happened to fit and solved a problem.
Apps like Crouton have a hands free mode which allows you step through the instructions by winking (right = forward, left = back).
Years. Not sure how many but a lot.
Edit: this website says 2019.
It is gone. Absolute monstrosity now.
Street view image.

What are your answers to those questions?
Canyon lookout, Springbrook National Park. Facing north east towards Surfers Paradise.
https://maps.app.goo.gl/n5SAhwU43PuTGbVS6?g_st=com.google.maps.preview.copy