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I worked in Antarctica with the USAP for about 7 years. It's logistically impossible.
For one, we had plenty of days that were in the 40s, which turned our ice runways into swimming pools.
Second, the shift nature of the ice would tear up the track in the span of a year.
The dark rail would heat up, and melt the surrounding ice.
Hurricane force winds are common, and come quick down there. So, good luck staying on the rails, or even keeping the rails clear of ice.
Large parts of the continent routinely break off. What are you going to do when part of the ice the size of Manhattan decides it doesn't want to deal with you anymore?