I have the ACC trailing distance set to one bar, and this seems pretty comfortable for me about 90-95% of the time (I'm guessing it is normally about 2 seconds of separation to the next car ahead). But I notice on occasion - mostly off the highway - the gaps seems different. It either gives a really long gap (dunno - maybe 3+ seconds?), or more disconcertingly gives a lower gap (guessing ~1 second?) - enough that I feel like it is close to tailgating and I have to disengage it. I had a hypothesis that is was doing the occasional shorter gaps for darker cars that tended to blend into the surroundings, and the white cars tended to be kept at the longer distance, but I think I may be imagining that (confirmation bias). It doesn't seem to be related to a certain road or speed, just kind of random occurrences I guess. Anyone else notice this kind of ACC time gap variability from time to time?