Elon Musk’s Tunnel Plan Isn’t as Crazy as SpaceX or Tesla
Is technology really the slow and expensive part of boring tunnels? To me it has always seemed that tunnels are expensive because:<p>* Planning the traffic impact and how it interacts with other transport lanes, all the above-ground building work to make the tunnel useful,<p>* Emergency ventilation and escape routes, and all other infrastructure that goes into the hole,<p>* Avoiding any building foundation piles, unmapped tunnels, pipes and cables, re-planning and fixing them if you do hit them,<p>* In Europe at least, archeological surveys.