LAS VEGAS (AP) -- Las Vegas cab driver Gerardo Gamboa thought someone left a bag of chocolates in the back seat of his vehicle, but the stash turned out to be $300,000 in cold hard cash. Now, Gamboa is winning honors for honesty after turning in the money he found Monday. The money was returned to an unidentified poker player. Yellow Checker Star Transportation named Gamboa its driver of the year and rewarded him with $1,000 and a dinner for two at a restaurant. A message left Wednesday for Gamboa at the cab company wasn't immediately returned. Gamboa told the Las Vegas Review-Journal he had another passenger by the time he began wondering what kind of chocolates were in the brown paper bag. He peeked inside at a traffic light. "I told my passenger, 'You are my witness on this,'" the 13-year taxi driver told the Las Vegas Sun, "and then I immediately called my dispatcher." Gamboa took the six bundles of $100 bills to the company's main office, where Las Vegas police and casino officials linked it to the poker player. Gamboa said the man gave him a $5 tip after a trip from the Cosmopolitan resort to the Palms Place tower, and Gamboa then drove to the Bellagio resort, where a doorman helping a passenger into the car noticed the bag. It took several hours to verify the identity of the owner and return the cash. He took Gamboa's information, but didn't immediately leave a reward. "If he doesn't give me anything, that's OK," Gamboa told the Sun. "I'm not waiting for any kind of return. I just wanted to do the right thing, and I appreciate what the company did for me."