After seeing all those enthusiatic comments, I was very disappointed when I saw what this is actually about. I was expecting something like changing marks on t

After seeing all those enthusiatic comments, I was very disappointed when I saw what this is actually about. I was expecting something like changing marks on the street, maybe even auto-rearranging parking lot marks. That's what I imagined "E-Ink" / "electronic ink" to be. However, it's just a display within a sign. Not sure about other cities, but at Berlin's highways, we have this for years. It is used to adjust speed limits to traffic, avoiding or dewarping traffic jams. It is also used to block lanes as needed, e.g. during the time tunnels are cleaned, without having to put up signs and moving them with the workers while cleaning. What is so spectacular about using same old idea for parking signs? Am I missing something?