Second there's the Mini-Trac expedition vehicle, designed and built in 1965 for the Australian researchers based at the Wilkes Antarctic Station: one of the coldest and windiest places on earth. The Mini-Trac was built by Terry O’Hare who ran a coachbuilding company in Sunshine (!), just outside Melbourne. O’Hare used an Austin 850 and removed its original driveshafts, universal joints, hubs and suspension and had drive sprockets fitted to the differential output shafts, providing its 850 power independently to both tracks via chains. Two more Mini-Tracs were built, one went to New Zealand and the other to Canada, but all three haven’t been seen for decades. The Wilkes base was abandoned in 1969. Could they survive?
Last in line here is the Stimson Snow Bug, as it was drawn in 1969 or 1970 by the great Barry Stimson (he can't remember exactly). Barry was approached by an Austrian company to design a snow vehicle that could carry four people over snow and that would be cheap to build. Barry: “Snow mobiles were out there but they could only carry two persons. I did it as simple as I could make it. It would have had two rubber based tracks and to make it turn left you just put the brake on the right hand wheel, or the other way 'round'. Unfortunately it never left the sketch stadium after the Austrians lost interest."
The RTV used by Scottish Hydro-electricity in the 1980s - 'Ideal for snow'
Picture courtesy Andrew MacLean