Maurice Guyot, aka Guy Loé, was a French artist born in 1898, who bought a run-of-the-mill 1931 Citroën and had it transformed into a traveling workshop.

The idea was that Monsieur Guyot could drive to where he wanted to paint, park, deploy his handy-dandy little studio and paint with a clear view out of the elements.

https://www.hagerty.com/articles-videos/articles/2020/02/18/utterly-strange-cars-i-never-knew-existed-until-paris-retromobile
https://www.retromobile.com/Visitors/The-show/Videos/Videos-2020/Guy-Loe-s-vehicle