One thing I like about mine is that when I approach from the rear, the ACC tells me what the speed of the approachee is. From that, I make my passing/following plan. I do think that the programed following distance is too far, but simple pressure on the pedal obviates that when necessary.
Stew and Diane (and Marco)
2018 Entegra Cornerstone 45X
Formerly: 2015 Entegra Cornerstone 45B, 2013 Entegra Aspire DEQ IFS, 2004 DSDP; all sold