Grumier, that’s French for a heavy logging truck. Using it as a search term on YouTube results in a grand collection of videos, featuring mostly Volvos and Scanias, carefully maneuvering down the mountains. I selected a few of them, starting with a spectacular sightseeing tour.
Crossing an ol’ bridge.
Switchbacking down the mountain.
Naturally, things get more slippery during the winter season.
The last one, it’s Monsieur Arnoux again, crawling through a village. Bonus points for the Fiat Panda 4×4, it really must be in its element there.
Many more of these videos on the Extrême Ineamm YouTube channel.
Related article (stills of an empty grumier, yet not in France):