After reading a few posts I have come to the conclusion that acc would just cause me to much stress. I always leave good room from mine to the car in front but tend to find that people just abuse it by pulling in and leaving no room.
if it leaves such a big gap I think the red mist will descend with acc.
ps find the finger speed setters on my 3008 by just upping and lowering my speed to keep a safe distance while on ordinary cc.