It actually works pretty seamlessly if you understand it's limitations. The key is it very robustly tracks the vehicle that "is" in front of you, but if the vehicle changes or goes away, in order to be robust it needs to take a while to not follow it anymore.
So, the vehicle turns and you don't, it still tries to follow it. If the vehicle changes lanes, it takes a while to detect that. But, the most difficult for it to do is detect a stopped vehicle in your path that you were not following. In that situation, I don't recommend ever relying on MRCC.
All that said, I use mine on city roads all the time.
Sent from my iPhone using Tapatalk