>>64182252
>Why? Build new with far wider gauge.
makes no sense when half the world uses standard gauge already, switching russia, or at building a main line in 1435 would give you straight access from UK/France to China/Korea

>If the germans had won Europe would be covered by 3 meter wide breitspurbahn tracks by now.
That was a meme, one of the ideas people dangled in front of Hitler like jingling keys to get cushy jobs, not even the Brunel's 2meter wide gauge went anywhere
If you want peak autismo megaprojects than i've got just the thing for you, the the Bering strait intercontinental railway, and since North America is standard gauge you could even go to Mexico