A Las Vegas taxi driver has been hailed for his honesty after ensuring that $300,000 in cash found left in his cab was returned to its rightful owner, the Las Vegas Sun reported on Tuesday. Gamboa picked up the cash-toting man early on Monday at The Cosmopolitan hotel and drove him to the Palms Place, where he received a $5 tip, he told the newspaper. At Gamboa's next stop, a hotel doorman at the Bellagio discovered the bag in the rear of the cab,.. moved it from the back seat to the front passenger seat... After peering inside the bag...