Hjulspår is/are 'wheel tracks'. Hjul is 'wheel'. The words are related, and says my etymological dictionary, also same as Greek kyklos, from which we have Swedish cykel and English bicycle. Our Indoeuropean ancestors probably came here on wheels most of the way - not by bike, but oxcarts.
The new snow was gone yesterday; now we have snow and sleet again. But degrees above zero and some sun are promised for tomorrow.