As said earlier on similar boring company related topic, the metro in (say) Tolouse (France) or Turin (Italy) has been made using small tunnels (and unmanned ca

As said earlier on similar boring company related topic, the metro in (say) Tolouse (France) or Turin (Italy) has been made using small tunnels (and unmanned carriages, Matra VAL system) several years ago already: https://news.ycombinator.com/item?id=12935974#12937599 https://news.ycombinator.com/item?id=12935974#12937599 Not exactly "news" and for the moment at least the boring company bought a used TBM: https://news.ycombinator.com/item?id=15002501 https://news.ycombinator.com/item?id=15002501