You know what made me laugh? The coke Zero ads they were playing in the states while we were there... with the Coke marketing guys drinking coke zero in their cubicles 'for research'
I laughed because it's closer to the truth than coke would like to admit...
If you pour a glass of australian coke and a glass of coke zero, and put them side by side, you'll be hard pressed to pick which one is which, sure, they taste slightly different, but not enough that you could actually discern which one is which...
try that with australian coke and american coke... it's easy to pick.. as soon as the american coke hits the back of your throat, that oily, corny aftertaste starts to build...