I can't speak for GM cars but the Leaf regenerative braking isn't enough to stop the car in this situation, only slow it.
To me regenerative braking feels like putting the car in D3 or turning off overdrive. As soon as you stop giving enough gas to accelerate or hold speed it just drags the car down.
I would never expect it to slow the car to a stop for me.
Also in the Leaf the amount of regenerative braking applied is diminished if the car is over 90-95% charged. It has 4 dots indicating level and they have halos indicating the max possible based on conditions.
To me regenerative braking feels like putting the car in D3 or turning off overdrive. As soon as you stop giving enough gas to accelerate or hold speed it just drags the car down.
I would never expect it to slow the car to a stop for me.
Also in the Leaf the amount of regenerative braking applied is diminished if the car is over 90-95% charged. It has 4 dots indicating level and they have halos indicating the max possible based on conditions.