I do find it interesting how different Coke tastes in different countries. South African Coke is awesome. Finnish Coke, meh. I think it has something to do with the water and sugar used, since I'm pretty sure the rest of the ingredients are the same.
The weird thing is that Pepsi isn't affected as much somehow. So in Finland I could take either, no real preference between Coke and Pepsi (depends on the mood that day), but in SA Coke is king. Pepsi doesn't stand a chance.
That "frozen" Coke looks awesome! On a hot day in SA, I would sometimes fill a beer mug with ice and fill the gaps with Coke, refilling a few times from the can as needed. Which brings me to another point. I used to drink quite a lot of Coke when I lived in South Africa and could taste the difference between Coke from a can, from a plastic bottle and from a glass bottle (seriously, no BS). Glass bottle was my favourite, then can, then plastic.