A simulation of this drive in your car. Every metre of climb and descent, the air you push through at the speed you will hold, and the weather forecast for the hour you will be at each point — ending in the number that matters: the charge you will have left when you arrive.
It finds the chargers along the way, works out the fewest stops that get you there with the charge you asked to arrive with, and hands the route to your maps app.
Every figure is an estimate. It has never seen your car, your right foot or the traffic on the day, and charger databases go out of date. Keep the safety margin, and check a charging stop before you depend on it.