+1 that comment on SC. It's a drivers aid. A human can get distracted and automation can get confused. But put the two together and you both are watching each others back. I rejected a Ultimate earlier this month because it didn't have SC (built right before they started to included it). I'm very much looking forward to our family road trips where I've got a co-pilot in my seat watching my back, just like I'll watching his. My wife on the other she can fall asleep ....she makes a terrible co-pilot.