Article: Las Vegas 'a great sociological test lab'

LAS VEGAS -- A McDonald's franchise owner experimented last year by serving hamburgers without diced onions. Soon after, they were back on the bun with the pickles, ketchup and mustard.

The test was not necessarily a failure. It merely reaffirmed that southern Nevada customers wanted onions on their burgers.

Six years ago, Washington Mutual bank chose Las Vegas to test a concept in which customers could meet tellers at pods instead of more traditional windows. The "teller towers" are now an integral part of the 117-year-old bank's 2,600 locations.

While Las Vegas is dynamic, diverse and different from many places, corporate America has found the area's 1.7 million residents -

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