This 1926 Armstead Snow Screw-Propelled Vehicle was specialty designed to cope with conditions alike ice and difficult snow terrain.
This thing is moved by 2 rotating horizontal cylinders fitted on a helical flange which should be engaged with the ice and snow surface.
It was designed by the leading Detroit car makers united by the name “Snow Motors Inc”! This vehicle could run from 6 to 8 miles an hour.
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