You may have noticed on the panel that every time when phantom braking happens the displayed speed limit drops from, say 70 to 50, or even a "blank". IMO the car then decides to rapidly drop to the new limit.
The question is, why on earth, does this "smart" car think that the speed limit has changed when you and I know it hasn't. One theory is that it assumes you are on the exit lane due to GPS error (you'll find it in the manual under TACC!). I find this hard to believe for multiple reasons, but I won't go into it.
My theory is that the map software has erroneous or blank values for speed limits at certain locations. (Could these locations have had construction happen at some time in recent past??). And until these are updated we are stuck.
If there is one item that is absolutely frustrating in a $90k car, it is this stupid cruise control. There is no setting in the car for a "dumb" cruise control, which is what I want until this thing is perfected.
