Inspired in the car speedometer, adding the mileage and a date and time display would be incredible, because you can transmit in just one piece: The mileage (or any accumulated value), the speed (or the rate of variation), and the time and date.
You can create incredible animation effects where like in climate change you can transmit the co2 level in ppm (mileage), the yearly increase in ppm (speed) and the date and time gives you the last time the value was measured, or if you run the animation you can see the perspective of say the last 50 years in a dramatic ways, as you can perceive how the speed with which co2 is increasing is still accelerating