We saw a Unimog thing, very similar to that, high up a mountain pass in the french alps last week. Our french friends were not at all happy by its presence, and called the police. It had wrecked the track to get up there and crossed a bridge with a weight restriction of 3 tonnes. We couldn't find the owners, they must have gone for a stroll, but they were in for it when they got back. My friend said despite the bridge , it couldn't see how it would get back down, as some of the switch-backs are ok going up, but no way could they attempt them going down. He thought the only way down maybe straight down the ski slope, a red run!
