And regenerative braking slows the car down. If you aren't coming to a stop, it is better to glide at speed.
Depending on make, model, and drive mode, you might need to put the EV in neutral. They don't have to have regenerative braking to stimulate transmission drag, and foot off accelerator is the same as being in neutral; I think the EV1 worked this way.
Then others can have one pedal driving. Foot off accelerator is full regen brake that is strong enough to bring the car to a stop. Apply more pedal for less braking until you get to a point where power is applied. There is a neutral/glide area between brake and power. The friction brakes operated by the other pedal are for holding the car on steep hills and emergency stops.
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