I relax more on longer drives with ACC. I tend to drive faster, so slow drivers in the left lane drive me a bit batty. With ACC on, that tendency is blunted h

I relax more on longer drives with ACC. I tend to drive faster, so slow drivers in the left lane drive me a bit batty. With ACC on, that tendency is blunted heavily, and I just roll along, making occasional adjustments. But my temperament is much improved.