Some EVs have a setting or mode that allows the driver to control the vehicle's acceleration and deceleration with the accelerator alone. Pressing that pedal results in a request for power as usual, while lifting off it triggers regenerative braking that's aggressive enough to bring the vehicle to a stop. Many EVs with one-pedal functionality provide a choice of multiple levels of regen, and some have a button or paddle that will bump up the braking power when pressed.