In a video from few years ago he mentioned "electromechanical prototyping" at Verily ( https://en.wikipedia.org/wiki/Verily https://en.wikipedia.org/wiki/Verily

In a video from few years ago he mentioned "electromechanical prototyping" at Verily ( https://en.wikipedia.org/wiki/Verily https://en.wikipedia.org/wiki/Verily ) previously called Google Life Sciences which is doing healthcare and biotechnology related research. Not exactly the first thing you might think when hearing Google.