https://www.cnet.com/roadshow/news/volvo-built-eclipse-glasses-but-for-the-xc60s-moonroof/

In order to allow owners to view the solar eclipse on August 21 without leaving the vehicle, Volvo created the straightforwardly named XC60 Panoramic Moonroof Eclipse Viewer.

This doesn't look like something you'd want to leave attached while driving.