This is incredible because the vast majority of what it takes to build roads, rail tracks, docks, and such infrastructure is all in the clearing and relandscapi

This is incredible because the vast majority of what it takes to build roads, rail tracks, docks, and such infrastructure is all in the clearing and relandscaping of land. It doesn't have to be perfect in terms of aesthetics or seals, but it has to be very stable and able to take the thin layer of road surface, rails, concrete on top and the weight that they'd carry. To be able to automate the landscaping is to massively reduce the cost of infrastructure projects in terms of labour and materials, but also likely the time to deliver them too.