Wow. Glad so many liked it. I made it for my wife's range anxiety, and intend to laminate the final product and clip it to the driver's sun visor.
My "training", of course is to completely ignore the crazy range predictions on the car's fuel gauge. Also, ignore the chart bar data when the first hard data point happens at "Low Batt Warn".
As soon as that pops up, reset a trip odometer to zero and based on the chart, you'll have a very accurate idea of how far you can really go. The cross check is to be able to predict, with the trip odometer, when "Very Low Batt Warn" comes on, and ultimately know when "Turtle" is immanent.
I purposely left out any technical stuff she doesn't care about. Just provided data at a certain speed in mostly ideal conditions provides this many miles. She doesn't care how many KW or % that is.