I’m watching the film Super Size Me, and they’re talking about the massive drinks you can get from fast food joints and the 7-11. In general I didn’t indulge in such things, primarily because I have a bladder the size of a walnut, but one of my small treasured memories of the US is driving to South Dakota in the summer. It was hot and bright, a day that director’s show with overexposed film and distant horizons. Stopping at a gas station I picked up a vast bucket of diet coke, enough that the cup could hardly hold together, and filled with a positively un-British amount of ice. Well worth the next 3 pitstops.