Few years ago, when Iraq war was at its very ugly head, the rumours flooded the media regarding an established Iraqi scientists who made headway on research into underwater propulsion and was scooped off to US. Despite my best efforts to locate the said articles with the notes, the person in question disappeared.
A handful of years later though, plans for 4,000mph underwater train from New York to London have been unveiled.
The Maglev Train would use electromagnetic propulsion through an underwater, vacuum channel, in order to reach unprecedented speeds. The final product would basically get you from New York to London in a little less than an hour (disregarding the time required to clear the border patrol and the customs, of course).
Read more here.