Coca-Cola started out as a syrup into which you squirted carbonated water. The bottle designed to contain the resulting fizzy drink became one of the most famous pieces of packaging in the world. It was designed in 1916 as a result of a competition. Despite changes of flavour, the introduction of cans and relentless global competition from rivals, the heavy glass bottle with the archaic-looking trademark still symbolises the American dream. Accordingly it inspires approval or hostility - depending on taste.