Do you have to pay to get the different cars/mods in spintires? Or once you've paid for the game, you get full everything?
the game comes with basic russian trucks, as thats what it is about, all the cars etc are "mods". They are available through the steam workshop for free. just click on them to subscribe and they load to the game folder
There is map mods also, bit different to dowload, and you have to manually add them to the correct folder