4 ms·
Above ground rail isn't practical in urban areas. The video had silly car tunnels, but in practice, I'm sure the bulk of their business will be subway tunnels.
by namlem 10y ago
Above ground rail isn't practical in urban areas. The video had silly car tunnels, but in practice, I'm sure the bulk of their business will be subway tunnels.
- strange_quark 10y agoWhat? The Chicago L and NYC subways (both of which carry hundreds of millions of riders per year) have many, many miles of either at-grade or above-grade track.