Colonization of the Moon
If multiple bases were established on the lunar surface, they could be linked together by permanent railway systems. Both conventional and magnetic levitation (Maglev) systems have been proposed for the transport lines. Mag-Lev systems are particularly attractive as there is no atmosphere on the surface to slow down the train, so the vehicles could achieve velocities comparable to aircraft on the Earth. One significant difference with lunar trains, however, is that the cars would need to be individually sealed and possess their own life support systems.
High-speed rail in the United States
In 2012, the Northeast Maglev, a small firm in Washington, D.C. with backing from the Central Japan Railway Company, proposed a new high-speed rail service along the Northeast Corridor with initial service between Washington, DC and New York City and they have spent $1.4 million lobbying Congress. The proposal calls for the use of maglev technology which will require infrastructure separate from the Amtrak's NEC networks. The company proposes to deploy the JR-Maglev trains on a service from Washington, D.C. to New York City with a travel time of 60 minutes. Previous proposals of deploying maglev in the area have stalled due to lack of funding and legislative support. In November 2015, the Federal Railroad Administration approved a grant of $27.8 million to Maryland Department of Transportation and Maryland Economic Development Corporation to conduct studies on building a high-speed Maglev line that would carry passengers between Washington and Baltimore.