well, that's a strange thing to do with a dozer... those are wheels, sort of

Ernst Meili became known in 1958 with the Metrac but he had already built in 1943 the spring wheeled prototype to mitigate the lack of rubber.

Picture from book of Gerold Röthlin ‘From Autotractor to modern special vehicles’ from Verlag Gerold Röthlin, Kriens, 2004.

http://www.unusuallocomotion.com/pages/locomotion/unusual-locomotion-wheels-tracks-walking-reptation.html