hyperloop

A trip between New York and Washington would take just 30 minutes in the levitating pod system, the company said.
The proposed route between Mumbai and Pune could cut travel time from over three hours to 25 minutes.
The Hyperloop would transport travelers in underground pods at speeds up to 700 mph. According to a tweet from Elon Musk, he's received "verbal" government approval to build it, but there will still likely be challenges ahead.
System could one day transport people at speeds of more than 700 mph.