0-60 time is 2.6 seconds, or 10.32m/s^2 if it’s evenly distributed. So from zero you’d be doing 11.5mph in 0.5s (and travelled a little over four feet).
But importantly, it looks like this is more of a ratchet effect… so if your pedal is stuck at 100%, it’s because you pressed it that far (even if intending it to be momentary). That’s not something you’d normally do in a parking lot full of nuns, you’re probably on a highway with some time to react and press the brake. My guess is that’s why we haven’t seen a tragic accident out of this.
But importantly, it looks like this is more of a ratchet effect… so if your pedal is stuck at 100%, it’s because you pressed it that far (even if intending it to be momentary). That’s not something you’d normally do in a parking lot full of nuns, you’re probably on a highway with some time to react and press the brake. My guess is that’s why we haven’t seen a tragic accident out of this.