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.
List of maglev train proposals
Orlando maglev: In December 2012 the Florida Department of Transportation gave conditional approval to a proposal by American Maglev to build a privately run 14.9 mile, 5 station line from the Orlando International Airport to the Orange County Convention Center. The Department requested a technical assessment of the technology and said there would be a "request for proposals" issued to see if there are any competing plans. The route requires the use of a public right of way. If the first phase is successful American Maglev would propose extensions in two further phases (4.9 miles and 19.4 miles) to carry the line to Walt Disney World.