I'm an on the road salesmen and live in my ST, 55,000 miles a year.. When a company sells you feature, advertises as such and it's part of a $1000 option is it wrong to want that item you spent money on to work? This is just one problem to my six months long debacle.
I can see your frustration and disappointment. Sorry.
I am an engineer that works for a road authority (think DOT, but in Canada) . One of my files is to address the safety issues and legislative requirements associated with automated vehicles in our jurisdiction. While industry keeps hinting at automated vehicles being around the corner, a true automated vehicle is still decades away. Don't trust everything the salesmen have to say. (Sorry could not resist.)
If you bought a sport vehicle, so it could determine the legal speed limit for you and then set the cruise control at that speed, you may have bought the wrong vehicle, automation or not.
Good luck and safe travels,
Ron
PS. I have some magic beans for sale, if anyone needs some.