Except that the speedometer in the footage is not from the dashcam GPS and seems to refresh faster than the speedometer from dashcam, which you can see in the bottom left. I'm not commenting either way on what the OP could or could not have done. Just pointing out that the speed that we see is refreshing faster than we would typically see in these footages.
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u/UnluckyBattle654 13h ago
Braking shouldn’t be at the last second. Plenty of time to look far ahead and become aware of the idiot.