I know.
Like that other proposal to build a tunnel from the UK to France .
Sheesh
People can dream though.
Not like that in the slightest.
London and Paris are only 200 miles apart, and the technology to join them by train existed as early as 1840.
It took 150 years to build because of the great expense, despite the fact that it was obviously extremely practical.
It is a 4.5 hour round trip, less than 2 hours longer than a roundtrip flight, and arguably far more convenient, since the train takes you to either city's center.
It is about 7,000 miles from Beijing to Seattle. If a speed train route were built, it would take at absolute minimum 40 hours compared to an 11 hour nonstop flight.
It would also require financing 7,000 miles of track for high speed purposes and building a 50 mile tunnel - 66% longer than the Chunnel - in permafrost conditions.
The technology's all there, just like the Chunnel's was over a century. Given unlimited time and unlimited money, this can all be done.
But it would be much, much cheaper to build a fleet for Concorde-style service that could reduce the flight to 5 hours.
TGV trains carry about 750 passengers maximum, for short runs (i.e. runs that do not have to carry food and water and toliet facilities for 750 people for two days).
A380s carry 850.