In reply to MG: Back in late 1980's /very early 1990's, a light weight landrover was driven to the centre of the Loch Morlich and back.
Not just in the USA do we find 'special' people.
Not sure how thick the ice would need to be to support the weight, probably a lot less than we would all think, no more than three or four inches or so i would guess.
Some of our northern friends from Sweden or Norway may have the answer to that one.
Not something I would do mind, even with no roof on the landy!