You commented that you don't understand the obsession with analogue speedometers. It is a well-understood ergonomic principle that an analogue needle display gives an indication of rate of change that is easier to interpret than a digital read-out. Also it is much easier to 'dead-stop' a needle and maintain a constant value rather than 'hunting' either side of the number in a digital display. You can see your speed at a glance from the position of the needle without having to actually read the value and then use brain power to process the information. This is why aircraft electronic instrument displays incorporate counter-pointer read-outs rather than pure digital, and why more analogue than digital wristwatches continue to be sold. It is bad design not to annotate the analogue speedometer scale with the important speed limit numbers.