Maybe targeted at Americans and using US customary short tons (which is 907 kg)

As an American, I'm going to need this as a volume, either in terms of Olympic-sized swimming pools or the height of a pile in an [American] football stadium. Maybe I'd accept weight as a quantity of Ford F-150s, but you'd be pushing it.

4,000 tonnes is almost exactly 4 tonne. Could be 4,0004 tonne.

That's not how the comma separator works in English.

I guess you're quoting it because it is EXACTLY four million kilograms?

Probably for our freedom unit loving friends, they have a different ton (because why not).

Our freedom tons are built for our particularly large trucks.

Believe it or not the Europeans run heavier trucks than Americans. Ours just get to be longer.

I also like to take potshots at Americans, but come on. It's unlikely that a newspaper called "the berliner" in a article about Berlin included this line specifically thinking about citizens of a far-away foreign country who don't use metric units that often.

Occam's razor says that it's actually one of our noble and enlightened European journalists who made that sloppy remark without realising it.

"4k tons" is 4 gigagrams (Gg).

LLMs couldn't've written that!