The Americans did make the Rolligon which is pretty neat. https://www.youtube.com/results?search_query=rolligon https://www.youtube.com/results?search_query=ro

The Americans did make the Rolligon which is pretty neat. https://www.youtube.com/results?search_query=rolligon https://www.youtube.com/results?search_query=rolligon William Albee invented the tech but it's now owned by a petroleum production equipment company. http://www.nov.com/Segments/Completion_and_Production_Solutions/Intervention_and_Stimulation_Equipment/Pressure_Pumping_Equipment/All_Terrain_Vehicles.aspx http://www.nov.com/Segments/Completion_and_Production_Soluti...