Jonathan Kaiman, reporting for the Guardian:
The project – nicknamed the “China-Russia-Canada-America” line – would run for 13,000km, about 3,000km further than the Trans-Siberian Railway. The entire trip would take two days, with the train travelling at an average of 350km/h (220mph).
The reported plans leave ample room for skepticism. No other Chinese railway experts have come out in support of the proposed project. Whether the government has consulted Russia, the US or Canada is also unclear. The Bering Strait tunnel alone would require an unprecedented feat of engineering – it would be the world’s longest undersea tunnel – four times the length of the Channel Tunnel.