Wealthy ppl go by train ;P

Well, they thought that maybe they might want to buy some drinks or snacks, or maybe Ford, while they were on the train.

I went to the original source from that link and read the comments. I think this is most likely the situation.

$134 Billion suggests it's either fake or from a sovereign fund. However that amount is a large fraction of what most countries hold of US treasuries - it's unlikely that China would just hand 5% or 10% of all US Debt they own to a pair of guys. It would be as likely as someone carrying 70 out of all 72 Monet's in the world across the border - fakes.

What's more likely is this is North Korea smuggling forgeries, first by landing in port in Italy by private ship then crossing the border by land into Switzerland where NK's financial stash is known to be. The idea is there's less scrutiny at border crossings than by plane where it will pass through x-ray (true to a degree). Italy is the simplest entry to Switzerland by boat, and NK employs several boats for smuggling as has been thoroughly documented and in fact being discussed as we speak at the UN for the new resolution.