Air circulation in the car during hot weather
It is impossible to be in the train car during the summer, because even with the windows open - air circulation no, not to mention the floors in the car. It's really a tough trip, which definitely won't make you want to try it again soon, especially when the weather is hot. I understand that old trains do not have air conditioning, but PV should very much consider which wagons to choose during very hot weather for passenger transport.
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