Why does the Swedish government want to revive retro 'night trains'?

The Swedish government has made it clear that the night train, which was the protagonist of travel in Europe in the 20th century, will be restored as a major long-distance travel vehicle. Night trains are not only loved by users because they enjoy travel smoothly by allocating bedtime to travel time, but they are also attracting attention as an approach to environmental issues.

Sweden Wants to Revive Europe's Overnight Trains-CityLab
https://www.citylab.com/transportation/2019/04/europe-night-train-sweden-eco-travel-sleeper-car-fossil-free/586228/

The Swedish government announced on March 31, 2019 local time that it will fund a night train service from Sweden to mainland Europe. According to the statement, night trains are low in carbon dioxide emissions even in transportation, so it is intended that people want to travel long distances using night trains.

At a government press conference, “We aim for a welfare state that does not require fossil fuels to cope with climate change and build a strong society. As part of achieving this goal, we will make night trains more useful as a low-carbon travel vehicle. I would like you to pay attention, ”says the government's task if it can contribute to getting more places to go by night train.

Night trains tend to move away from the market as faster and more comfortable means of transport develop, but there is still a strong European route of travel. When German Railways ceased to operate at night in 2017, Austrian Federal Railways will continue to take over some of the main routes, and the number of users is growing from there. Also, the long-established service Caledonian sleepers that connect London to Scotland are prosperous as ever.

Night trains have much longer travel times than airplanes, but they can move more slowly than rushes in the airport, and travel expenses, as well as premium blocks with sleepers and showers, are of course better than hotels. It is still loved by users. The Swedish government's efforts with environmental issues in mind may bring retro night trains closer to modern standards.