Dog 1: "Hey, look over to the right, there's a guy with a camera!"
Dog 2: "Can't. Have to keep my eyes on the road."
Dog in back: "I don't mean to alarm anyone but there's a Highway Patrol car behind us and the driver is giving us some funny looks..."
Dog 2: "It's OK, I'm driving 5 under the limit and have my licence with me."
Dog in back: "I'm not sure it's your dog licence that he'll want to see..."