Rothiemurchus said:
The Russians think that a tunnel should be built across the Bering Strait to form a railway link from London,England,to Mexico.
Well, if it got to Mexico, one could then traverse Guatemala, Hounduras, El Salvador, Nicaragua, Costa Rica, Panama, then on through S. America to the southern tips of Argentina y Chile.
Starting in England, the trip traverses the Channel Tunnel, France,Germany, Poland, then Russia all the way to the Bering Strait. Of course, the US and Canada must cooperate.
So the effort requires an international railway (InterRail), which requires the cooperation of many nations. From England to Mexico may not be practical, given the distance.
Several commercial matters need to be resolved, e.g. apportionment of revenue. Would it be by t-km (ton-miles)? What of interchange and port fees? Is it practical to ship by rail in Siberia and Alaska in the middle of winter?
The InterRail concept might be more practical in Europe and Asia, Middle East, and Africa, but there are still the matters of cooperation/agreements among the various national governments. On the other hand, lorry drivers traverse the continents, so in theory it would be practical for rail.