The rLoop with assistance from SpaceX is a high speed train that runs inside a vacuum tunnel and floats on anti-gravity magnetic hover engines.
It has been proposed to be put int place between Los Angeles and San Francisco and also a group in Manchester England are proposing a link between that city and London. Far in advance of the proposed HS2.
The rloop crypto currency coin is set up to gather finance in support of the project rLoopCoin.