Tractor

Unless they make huge future improvements, I don't think that the OSE tractor is worth replicating. I expect it to be pretty expensive and it doesn't move too well. https://www.youtube.com/watch?v=wFRcyyA1drI&list=PL6Jpysxw3Ty_lJdtgDDuHucCpavkUU5f-&index=3