Blatantly false advertising.

Then I saw the machine that very likely dispensed the naughty can, it's probably a very good money spinner and by charging $3 for a drink I suppose buyers believe they're entitled to litter the area.

A real problem here is the Mother can is only 500 ml, claiming it's 600 ml would normally quickly draw wrath, but I suppose only an old cheapskate like myself would ever notice. If I'm thirsty I find ordinary common taps are a frugal way of ending a thirst when out and about.