California Senator Scott Wiener is introducing a new set of bills to make streets safer across the state, including one that would change how you drive.
I'm currently in a rental that reads street signs and keeps the limit on the dash. Very handy for double-checking when you're suddenly not going the same speed as traffic. https://en.m.wikipedia.org/wiki/Traffic-sign_recognition
Going 70 down the Interstate when it saw a 15mph sign for a weigh station. Truck started slowing down real quick. It scared the piss out of me, and almost caused a huge pile up.
In my experience with them by Dodge is the speed is wrong often enough where it can be a problem.
Saying 25mph when it is 45mph is one thing, but the 45mph when it is 25mph is another. There are a few rural roads where it said 30mph when it was 55mph. I would see the speed on the dash and think it was an odd speed for the road and Waze said something other than the car, so I would be in this total state of not knowing to trust the car, myself, or Waze. Eventually I just started to ignore the car and use my experience and observations weighted against Waze.