French designer Thierry Gaugain, a frequent collaborator with renowned designer Philippe Starck, has unveiled his vision for a “palace on rails.”

The $350 million private “G Train” project reimagines the luxury rail travel experience with the modern yacht experience in mind. The 400-meter long train consists of 14 cars and glass so technologically advanced that it can switch from opaque to complete transparency. Passengers can also change “the interior ambiance of the train in whichever section they are,” says Gaugain. If they want a view to the outside, they can switch to transparent mode. If they want to create their own views, they can simply change the glass to opaque with any scene they want.

The romance of the G Train is not so much travel speed — but the journey itself.

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