One of the biggest hassles of site work in construction is the hauling away of spoils.  It’s costly and time consuming to bring in truck after truck to take unneeded soil off to an unknown dump site.  When Elon Musk and his team, The Boring Company, started digging a tunnel for a HyperLoop system in Los Angeles, they knew there had to be a better way to handle to soil than to haul it away.