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Maglev trains and maglev vehicle systems may also be of interest in space exploration, where the bulk and weight of traditional launch systems are prohibitive.[42] A maglev train can carry heavy cargo and people into space, and then ferry supplies to and from the space station.
Although maglev trains are typically faster, with longer travel ranges, and are more comfortable, NML trains would be cheaper than their maglev counterparts and may also be quieter, as there would be no suspension movement to disturb passengers and equipment.[41] If trains are conveyed inside partially evacuated tubes, air resistance is expected to be minimal and there will be no need for any form of air conditioning. Neither type of system would require electrically powered overhead lines, which can cause noise and power loss, and they would be safer than conventional train systems, in which coaches must be separated by a minimum distance to reduce the risk of fire. Non-magnetic levitation would not be suitable for moving large vehicles such as double-decker buses or trucks, as the vehicle would have to be much larger than the driving wheels, making it difficult to levitate and control its motion.
The development of maglev trains has been contentious in China, where political and economic motivations are mixed. In particular, China is concerned that maglev systems may be exported, with Japan and Korea buying up the technology; concern about this has led to a ban on all overseas sales of maglev technology by Chinese companies.[35]
Even if maglev trains are not feasible, there are many technologies that could deliver higher speeds, possibly using similar methods of propulsion. Non-magnetic levitation (NML) can reduce the need for rails, and it has been proposed as a means of safely transporting people in aircraft,[36] as a car ferry for sea travel, and as a method of floating cars, trucks, and buses above the water surface.[37] NML can also be applied as a means of moving cargo between docks, ships, and warehouses. The method is applicable for ships, land vehicles, or aircraft; unlike maglev, it does not require rails, as all forms of NML systems rely on forces produced by electromagnetic fields to levitate objects.[38] NML may be used to move cargo between ports[39] or to move industrial equipment such as foundry or welding machines from one building to another.[40]
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