![Futuristic Chinese ‘supersonic’ sub could reach US shores in under two hours Futuristic Chinese ‘supersonic’ sub could reach US shores in under two hours](https://mtic.us/wp-content/uploads/2014/08/rtxea8r.si_-310x168.jpg)
Traveling from Shanghai to San Francisco in under two hours may sound like a fantasy, but China believes it’s figured out how to design an underwater vehicle that can make the idea a reality.
More worryingly, though, is the possibility that the technology will be used to develop even more dangerous weaponry.