[paganel]

Yeah, forgot about those (was also on mobile and couldn't search easily). We also have one of them in my city, Bucharest, is employed by the local transport authority to help pull trolley-buses or even tramways whenever they break. Here's an image of it sometime in winter: http://tramclub.org/files/iarna_in_bucuresti_6_februarie_009... . It's a pretty intimidating machine, to be honest, but cool as hell!