On the way back from the Dallas meet this afternoon I was behind a whole line of rock chunking 18 wheelers. Being that we were all going 80, and I was getting nowhere trying to pass them... I went ahead and took it up to 100+ for a long stretch. Plenty of room, I could see for about a mile. As soon as I passed them, I immediately let off because of some serious vibration. Just as my speedo dropped under 80, BAMMM!, State Trooper waiting on the side of the road. Man, close. So glad I got annoyed so quickly