I had a young couple last night approach my car with beer in plastic cups. When they opened the back door, I told them they couldn't r ide with the open containers. I could see the liquid level in the cup was about 1/3 full. I told them if they wanted to finish the drinjs, I would wait a minute or two. They finished in a few minutes. They got in the car,they were from California, real nice people, and had a real nice conversation with them on the ride. Glad I didn't just keep going because they had drink cups.