Amongst the many other weird law and order measures in force within the UK, we have sections of roadway with ‘average speed’ limits. If you exceed that average, over a given distance, you get a fine.
Today’s invention is a modification to the standard speed trap detector.
This senses an average speed limit section of road and calculates the realtime speed limit which you have to observe at any moment so as to avoid exceeding the overall average.
If eg you have driven like a snail over the first 80% of the restricted section, then you should see a massive number indicated for the speed limit over the remainder.
Without other traffic in the way, this would make a prolonged stretch of such road much more entertaining to travel.