I hope you realize that lithium-ion battery fires are much worse than margarine or flour fires, and almost impossible to extinguish, especially in the confines of a tunnel.
And while prices might look good for the USA (I'm not sure), they are gigantic when compared to similar projects in Europe. And a mass-transport car tunnel has exactly 0 advantages over a rail tunnel.
And while prices might look good for the USA (I'm not sure), they are gigantic when compared to similar projects in Europe. And a mass-transport car tunnel has exactly 0 advantages over a rail tunnel.