WASHINGTON (Reuters) - Alan Greenspan had a glimmer in his eye and a spring in his step, but his happiness was not a result of high productivity or low inflation -- it was because he had just sold two Volvos. 'People always ask me, 'Well, what's it going to be with the economy,' and I used to say, 'It's going to get worse before it gets better',' said Greenspan, 68, a retired Naval Reserve captain who runs San Diego Volvo's military sales department.

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