I haven’t seen can six packs in the wild in Germany for ages, the few cans that are for sale come in trays of 24. Results do show pictures of “wrap everything in plastic” (Coca-Cola) as well as cardboard solutions like the Spanish one, the first hit that’s a commercial supply looks just like carton six-pack packaging for bottles.

Thing is cans are kind of iffy in Germany because of the 25ct deposit, it’s not so much the deposit that’s the issue (the same goes for very popular PET bottles) but that cans crinkle and once they do they might be right-out impossible to scan and get your money back. Also PET is fine for about everything but beer, and for beer there’s glass bottles. If you ever see beer in PET in Germany give it a wide berth it tastes as good as its price-point indicates. You’re better off with wine or sangria in a tetra pack.

I’ve seen cardboard in America too! Sometimes you’ll also see reusable clip-on plastic tops that some smaller stores will actually let you return so they can re-use them, or send them back on their next shipment, although that’s much less common.

Here the whole 6pack is either wrapped in a thin plastic foil or it’s cardboard.

Yes, but it’s actually not that great for the enviornment since in Spain normally the plastic foil and aluminium layer is not separated for recycling. The only part that gets recycled is the external cardboard layer.