My best reaction yet came from a county sheriff. I was driving the speed limit on a 4 lane highway. I saw him coming up, so I moved into the right hand lane. When he got beside me, he slowed way down and gave the car a good look over. Well, that look last about 2 minutes without him ever looking at the road. His car began to drift left towards the grass median. My windows were down, so I could hear him hit the rumble strip, and yet still no reaction. He was still watching me. It wasn't until his car was 75% in the grass median that he turned to look at the road. Dust was flying everywhere and the cars behind us slowed way down. Needless to say, he jerked his car back on the road when he saw where he was. He was laughing and gave a big thumbs up and cruised away.