I can’t get too excited about this as we have already decided to leave the scheme, but the worry with things like this is when someone else drives the car. My youngest daughter had to have one of these smart box things for her first year or two (private car), and it suddenly scored her down when the mechanic who road tested the car after a service exceeded the speed limit!
I have a human version of these boxes. She sits to my left and periodically squawks comments such as “you do realise that the speed limit is 40?” 😂