Have it for the first time on the current car. Tried it a couple times but bottom line is it doesn’t scan and plan as far ahead as I do! Like got etc CC though it is useful in those long 50mph sections and AVG speed sections.
I do however, think that CC and ACC contribute to lane hogging. People set it and sit in the outside lane, quite often totally unaware or if they are don’t care anyway, of the queue behind them!