The idea of an underwater train has lived in the realm of science fiction for quite a while now. China is looking to change that with a proposal to create a deep sea train system that will connect China directly to the United States.
For those that don't know, China is very far from the USA. Now that this realization is out of the way we can understand why it's bizarre to think up an idea for an underwater train connecting two of the world's super powers. The idea, if it does come to fruition, would be a huge undertaking, but also an incredible achievement.
The even stranger part is that the railroad isn't a one-way. It would also make stops in Canada and Russia for those that wanted to travel there too.