As a police officer was driving down the highway, he saw a car traveling very slow, at 30mph, while other cars went at over 60 mph. He stopped the car to find out there was 2 old men up in front, and 2 old women, sitting in the back and shaking.
He asks the driver, "Why are you traveling so slow?", he answers by saying, "The sign says Highway 30, I thought that was the speed limit". The police officer says, "No, that's the name of the highway, the speed limit is 50 mph." The 2 old man replies and say thanks. Curious, the police officer asks "Why are the 2 old ladies shaking?"
"We just came back from Highway 160."