Whoever wrote this headline has never encountered a passenger train before in their lives
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Wait til they learn about twin story trains. Twice the capacity!
Edit: And the first gen, a bit less comfortable tho but more reliable.
WOW, what will the incredible Elon come up with next!? Dude comes up with all the great stuff we should have invented like ~50-100 years ago.
/s
It doesn't double the capacity. It's more a 30% increase. And, double-deckers are actually old. They date from the 19th century. In 1855, the Chemin de fer de l'Ouest introduced double-deckers on suburban lines of Paris.
https://fr.wikipedia.org/wiki/Voiture_Ouest_à_impériale
Modern double-deckers date from the 1930s, with the Voiture à étage Etat:
https://fr.wikipedia.org/wiki/Voiture_à_étage_État