West Highland Line in Scotland: Passengers complain about train rides below freezing point. Locals have already named the train the “Polar Express,” alluding to the children’s book about a mysterious train journey to the North Pole.

The railway line, whose construction began in 1842, is not electrified and has been used by diesel locomotives and railcars since the 1960s. From the end of March, a steam-powered vintage train will be used between Fort William and Mallaig.