As Elon Musk quipped, in a few years this thing will move so fast you’ll need a strobe to see it. It’s not subject to the human reaction time or mechanical constraints.
Acceleration is limited by the grip on the ground under its feet. It could slowly accelerate to amazing speeds though.
We're spit-balling hero-bots, not nasty kill-bots, riiiight?
Let's invent a new Godwin's law reached when any discussion devolves (upgrades?) into rocket talks.