M29 Weasel

The M29 Weasel was a World War II tracked vehicle, built by Studebaker, designed for operation in snow.
The idea for the Weasel came from the work of British inventor Geoffrey Pyke in support of his proposals to attack Axis forces and industrial installations in Norway. Pyke's plan to hamper the German atomic weapons development became Project Plough for which he proposed a fast light mechanised device that would transport small groups of commando troops of the 1st Special Service Force across snow. In active service in Europe, Weasels were used to supply frontline troops over difficult ground when wheeled vehicles were immobilised.
https://en.wikipedia.org/wiki/M29_Weasel