China is kicking around the idea of building a high-speed train that would run from the countries northeast to the United States. The rails would cross Siberia and the Bering Straits to Alaska, across Canada then to the U.S.

The railway would run underwater for 125 miles which is four times longer than the tunnel that is under the English Channel. The train would travel at 222 mph meaning the entire trip from China to the United States would take about two days.